Note 5 - Loans and Allowance for Loan Losses - Activity in the Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Balance, beginning of year       $ 9,064       $ 8,262 $ 9,064 $ 8,262      
Provision for loan losses $ (592) $ (600) $ (882) (556) $ (409) $ (134) (180) (2,630) (723) $ 1,286    
Ending balance 12,125       9,064       12,125 9,064 8,262    
Total Allowance for Loan Losses 12,125     9,064 9,064     8,262 12,125 9,064 8,262 $ 12,125 $ 9,064
Recorded investment in loans                       2,409,047 1,739,214
Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       9,064       8,262 9,064 8,262 8,471    
Provision for loan losses                 2,515 589 (1,355)    
Charge-offs                 (394) (831) (1,941)    
Recoveries                 940 1,044 3,087    
Net (charge-offs) recoveries                 546 213 1,146    
Ending balance 12,125       9,064       12,125 9,064 8,262    
Total Allowance for Loan Losses 12,125     9,064 9,064     8,262 9,064 9,064 8,262 12,125 9,064
Individually evaluated for impairment, allowance                       198 192
Collectively evaluated for impairment, allowance                       11,927 8,872
Individually evaluated for impairment, loans                       8,439 5,352
Collectively evaluated for impairment, loans                       2,315,153 1,638,945
Recorded investment in loans                       2,323,592 1,644,297
Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 360    
Provision for loan losses                 42 134 69    
Charge-offs                 (42) (186) (151)    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 (42) (186) (151)    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 (52) 278    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       85,455 94,917
Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 42 186 (209)    
Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 52 (278)    
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]                          
Balance, beginning of year       1,821       1,563 1,821 1,563      
Ending balance 2,720       1,821       2,720 1,821 1,563    
Total Allowance for Loan Losses 2,720     1,821 1,821     1,563 2,720 1,821 1,563 2,720 1,821
Recorded investment in loans                       387,401 246,907
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       1,821       1,563 1,821 1,563 1,491    
Provision for loan losses                 920 338 (254)    
Charge-offs                 (80) (213) (161)    
Recoveries                 59 133 487    
Net (charge-offs) recoveries                 (21) (80) 326    
Ending balance 2,720       1,821       2,720 1,821 1,563    
Total Allowance for Loan Losses 2,720     1,821 1,821     1,563 1,821 1,821 1,563 2,720 1,821
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       2,720 1,821
Individually evaluated for impairment, loans                       0 0
Collectively evaluated for impairment, loans                       383,481 242,082
Recorded investment in loans                       383,481 242,082
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 3 51 0    
Charge-offs                 (3) (51) 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 (3) (51) 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       3,920 4,825
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 3 51 0    
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | CRE - Owner Occupied [Member]                          
Balance, beginning of year       1,135       721 1,135 721      
Ending balance 1,286       1,135       1,286 1,135 721    
Total Allowance for Loan Losses 1,286     1,135 1,135     721 1,286 1,135 721 1,286 1,135
Recorded investment in loans                       367,553 331,222
Commercial Portfolio Segment [Member] | CRE - Owner Occupied [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       1,135       721 1,135 721 399    
Provision for loan losses                 157 413 252    
Charge-offs                 (8) 0 (193)    
Recoveries                 2 1 263    
Net (charge-offs) recoveries                 (6) 1 70    
Ending balance 1,286       1,135       1,286 1,135 721    
Total Allowance for Loan Losses 1,286     1,135 1,135     721 1,135 1,135 721 1,286 1,135
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       1,286 1,135
Individually evaluated for impairment, loans                       1,006 1,266
Collectively evaluated for impairment, loans                       351,146 308,568
Recorded investment in loans                       352,152 309,834
Commercial Portfolio Segment [Member] | CRE - Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       15,401 21,388
Commercial Portfolio Segment [Member] | CRE - Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | CRE - Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | CRE - Investor Income Producing [Member]                          
Balance, beginning of year       2,099       1,751 2,099 1,751      
Ending balance 2,583       2,099       2,583 2,099 1,751    
Total Allowance for Loan Losses 2,583     2,099 2,099     1,751 2,583 2,099 1,751 2,583 2,099
Recorded investment in loans                       743,107 506,110
Commercial Portfolio Segment [Member] | CRE - Investor Income Producing [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       2,099       1,751 2,099 1,751 1,797    
Provision for loan losses                 449 116 123    
Charge-offs                 0 (34) (292)    
Recoveries                 35 266 123    
Net (charge-offs) recoveries                 35 232 (169)    
Ending balance 2,583       2,099       2,583 2,099 1,751    
Total Allowance for Loan Losses 2,583     2,099 2,099     1,751 2,099 2,099 1,751 2,583 2,099
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       2,583 2,099
Individually evaluated for impairment, loans                       1,951 440
Collectively evaluated for impairment, loans                       710,456 473,299
Recorded investment in loans                       712,407 473,739
Commercial Portfolio Segment [Member] | CRE - Investor Income Producing [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 360    
Provision for loan losses                 15 17 (76)    
Charge-offs                 (15) (39) (6)    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 (15) (39) (6)    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 (22) 278    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       30,700 32,371
Commercial Portfolio Segment [Member] | CRE - Investor Income Producing [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 15 39 (354)    
Commercial Portfolio Segment [Member] | CRE - Investor Income Producing [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 22 (278)    
Commercial Portfolio Segment [Member] | AC&D [Member]                          
Balance, beginning of year       0       0 0 0      
Ending balance 0       0       0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       0
Commercial Portfolio Segment [Member] | AC&D [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       0 0
Individually evaluated for impairment, loans                       0 0
Collectively evaluated for impairment, loans                       0 0
Recorded investment in loans                       0 0
Commercial Portfolio Segment [Member] | AC&D [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       0 0
Commercial Portfolio Segment [Member] | AC&D [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - 1 - 4 Family Construction [Member]                          
Balance, beginning of year       247       458 247 458      
Ending balance 567       247       567 247 458    
Total Allowance for Loan Losses 567     247 247     458 567 247 458 567 247
Recorded investment in loans                       82,707 32,262
Commercial Portfolio Segment [Member] | AC&D - 1 - 4 Family Construction [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       247       458 247 458 839    
Provision for loan losses                 280 (219) (464)    
Charge-offs                 0 0 (15)    
Recoveries                 40 8 98    
Net (charge-offs) recoveries                 40 8 83    
Ending balance 567       247       567 247 458    
Total Allowance for Loan Losses 567     247 247     458 247 247 458 567 247
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       567 247
Individually evaluated for impairment, loans                       0 0
Collectively evaluated for impairment, loans                       82,707 31,797
Recorded investment in loans                       82,707 31,797
Commercial Portfolio Segment [Member] | AC&D - 1 - 4 Family Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       0 465
Commercial Portfolio Segment [Member] | AC&D - 1 - 4 Family Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - 1 - 4 Family Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - Lots, Land, & Development [Member]                          
Balance, beginning of year       278       591 278 591      
Ending balance 526       278       526 278 591    
Total Allowance for Loan Losses 526     278 278     591 526 278 591 526 278
Recorded investment in loans                       105,362 44,411
Commercial Portfolio Segment [Member] | AC&D - Lots, Land, & Development [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       278       591 278 591 1,751    
Provision for loan losses                 (37) (661) (2,871)    
Charge-offs                 (32) 0 (16)    
Recoveries                 317 348 1,727    
Net (charge-offs) recoveries                 285 348 1,711    
Ending balance 526       278       526 278 591    
Total Allowance for Loan Losses 526     278 278     591 278 278 591 526 278
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       526 278
Individually evaluated for impairment, loans                       622 723
Collectively evaluated for impairment, loans                       96,666 38,891
Recorded investment in loans                       97,288 39,614
Commercial Portfolio Segment [Member] | AC&D - Lots, Land, & Development [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       8,074 4,797
Commercial Portfolio Segment [Member] | AC&D - Lots, Land, & Development [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - Lots, Land, & Development [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - CRE [Member]                          
Balance, beginning of year       679       395 679 395      
Ending balance 1,484       679       1,484 679 395    
Total Allowance for Loan Losses 1,484     679 679     395 1,484 679 395 1,484 679
Recorded investment in loans                       194,732 87,452
Commercial Portfolio Segment [Member] | AC&D - CRE [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       679       395 679 395 299    
Provision for loan losses                 805 284 96    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 1,484       679       1,484 679 395    
Total Allowance for Loan Losses 1,484     679 679     395 679 679 395 1,484 679
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       1,484 679
Individually evaluated for impairment, loans                       0 0
Collectively evaluated for impairment, loans                       194,732 87,452
Recorded investment in loans                       194,732 87,452
Commercial Portfolio Segment [Member] | AC&D - CRE [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       0 0
Commercial Portfolio Segment [Member] | AC&D - CRE [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | AC&D - CRE [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | Other Commercial [Member]                          
Balance, beginning of year       69       32 69 32      
Ending balance 126       69       126 69 32    
Total Allowance for Loan Losses 126     69 69     32 126 69 32 126 69
Recorded investment in loans                       12,900 8,601
Commercial Portfolio Segment [Member] | Other Commercial [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       69       32 69 32 25    
Provision for loan losses                 56 76 6    
Charge-offs                 0 (39) 0    
Recoveries                 1 0 1    
Net (charge-offs) recoveries                 1 (39) 1    
Ending balance 126       69       126 69 32    
Total Allowance for Loan Losses 126     69 69     32 69 69 32 126 69
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       126 69
Individually evaluated for impairment, loans                       211 0
Collectively evaluated for impairment, loans                       10,727 6,731
Recorded investment in loans                       10,938 6,731
Commercial Portfolio Segment [Member] | Other Commercial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       1,962 1,870
Commercial Portfolio Segment [Member] | Other Commercial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Commercial Portfolio Segment [Member] | Other Commercial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Consumer Portfolio Segment [Member] | Residential Mortgage Loans [Member]                          
Balance, beginning of year       672       443 672 443      
Ending balance 841       672       841 672 443    
Total Allowance for Loan Losses 841     672 672     443 841 672 443 841 672
Recorded investment in loans                       260,521 223,884
Consumer Portfolio Segment [Member] | Residential Mortgage Loans [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       672       443 672 443 358    
Provision for loan losses                 142 307 48    
Charge-offs                 (48) (176) (161)    
Recoveries                 75 98 198    
Net (charge-offs) recoveries                 27 (78) 37    
Ending balance 841       672       841 672 443    
Total Allowance for Loan Losses 841     672 672     443 672 672 443 841 672
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       841 672
Individually evaluated for impairment, loans                       2,014 1,304
Collectively evaluated for impairment, loans                       237,035 199,160
Recorded investment in loans                       239,049 200,464
Consumer Portfolio Segment [Member] | Residential Mortgage Loans [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 14 66 1    
Charge-offs                 (14) (96) (1)    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 (14) (96) (1)    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 (30) 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       21,472 23,420
Consumer Portfolio Segment [Member] | Residential Mortgage Loans [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 14 96 1    
Consumer Portfolio Segment [Member] | Residential Mortgage Loans [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 30 0    
Consumer Portfolio Segment [Member] | Home Equity Lines of Credit [Member]                          
Balance, beginning of year       1,337       1,651 1,337 1,651      
Ending balance 1,391       1,337       1,391 1,337 1,651    
Total Allowance for Loan Losses 1,391     1,337 1,337     1,651 1,391 1,337 1,651 1,391 1,337
Recorded investment in loans                       176,799 157,378
Consumer Portfolio Segment [Member] | Home Equity Lines of Credit [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       1,337       1,651 1,337 1,651 1,050    
Provision for loan losses                 (15) (242) 1,384    
Charge-offs                 (134) (184) (852)    
Recoveries                 203 112 69    
Net (charge-offs) recoveries                 69 (72) (783)    
Ending balance 1,391       1,337       1,391 1,337 1,651    
Total Allowance for Loan Losses 1,391     1,337 1,337     1,651 1,337 1,337 1,651 1,391 1,337
Individually evaluated for impairment, allowance                       178 192
Collectively evaluated for impairment, allowance                       1,213 1,145
Individually evaluated for impairment, loans                       2,392 1,381
Collectively evaluated for impairment, loans                       173,319 154,417
Recorded investment in loans                       175,711 155,798
Consumer Portfolio Segment [Member] | Home Equity Lines of Credit [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 10 0 144    
Charge-offs                 (10) 0 (144)    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 (10) 0 (144)    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       1,088 1,580
Consumer Portfolio Segment [Member] | Home Equity Lines of Credit [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 10 0 144    
Consumer Portfolio Segment [Member] | Home Equity Lines of Credit [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Consumer Portfolio Segment [Member] | Residential Construction [Member]                          
Balance, beginning of year       461       542 461 542      
Ending balance 435       461       435 461 542    
Total Allowance for Loan Losses 435     461 461     542 435 461 542 435 461
Recorded investment in loans                       59,060 72,171
Consumer Portfolio Segment [Member] | Residential Construction [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       461       542 461 542 390    
Provision for loan losses                 (37) 32 296    
Charge-offs                 (19) (129) (201)    
Recoveries                 30 16 57    
Net (charge-offs) recoveries                 11 (113) (144)    
Ending balance 435       461       435 461 542    
Total Allowance for Loan Losses 435     461 461     542 461 461 542 435 461
Individually evaluated for impairment, allowance                       20 0
Collectively evaluated for impairment, allowance                       415 461
Individually evaluated for impairment, loans                       243 238
Collectively evaluated for impairment, loans                       56,347 68,248
Recorded investment in loans                       56,590 68,486
Consumer Portfolio Segment [Member] | Residential Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses 0     0 0     0 0 0 0 0 0
Recorded investment in loans                       2,470 3,685
Consumer Portfolio Segment [Member] | Residential Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Consumer Portfolio Segment [Member] | Residential Construction [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 0 0 0    
Consumer Portfolio Segment [Member] | Other Loans to Individuals [Member]                          
Balance, beginning of year       266       115 266 115      
Ending balance 166       266       166 266 115    
Total Allowance for Loan Losses 166     266 266     115 166 266 115 166 266
Recorded investment in loans                       18,905 28,816
Consumer Portfolio Segment [Member] | Other Loans to Individuals [Member] | Excluding Purchased Credit-Impaired Loans [Member]                          
Balance, beginning of year       266       115 266 115 72    
Provision for loan losses                 (205) 145 29    
Charge-offs                 (73) (56) (50)    
Recoveries                 178 62 64    
Net (charge-offs) recoveries                 105 6 14    
Ending balance 166       266       166 266 115    
Total Allowance for Loan Losses 166     266 266     115 266 266 115 166 266
Individually evaluated for impairment, allowance                       0 0
Collectively evaluated for impairment, allowance                       166 266
Individually evaluated for impairment, loans                       0 0
Collectively evaluated for impairment, loans                       18,537 28,300
Recorded investment in loans                       18,537 28,300
Consumer Portfolio Segment [Member] | Other Loans to Individuals [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]                          
Balance, beginning of year       0       0 0 0 0    
Provision for loan losses                 0 0 0    
Charge-offs                 0 0 0    
Recoveries                 0 0 0    
Net (charge-offs) recoveries                 0 0 0    
Ending balance 0       0       0 0 0    
Benefit attributable to FDIC loss share agreements                 0 0 0    
Total Allowance for Loan Losses $ 0     $ 0 $ 0     $ 0 0 0 0 0 0
Recorded investment in loans                       $ 368 $ 516
Consumer Portfolio Segment [Member] | Other Loans to Individuals [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Before Benefit Attributable to FDIC Loss Share Agreement [Member]                          
Provision for loan losses                 0 0 0    
Consumer Portfolio Segment [Member] | Other Loans to Individuals [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | FDIC Loss Share Receivable [Member]                          
Provision for loan losses                 $ 0 $ 0 $ 0