Loans (Details 6) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded $ 7,205 $ 6,452 $ 7,044
Unpaid Principal Balance, With an allowance recorded 4,014 6,908 5,794
Unpaid Principal Balance 11,219 13,360 12,838
Recorded Investment, With no related allowance recorded 6,090 5,720 6,294
Recorded Investment, With an allowance recorded 3,992 6,877 5,676
Recorded Investment 10,082 12,597 11,970
Allowance for Loan Losses Allocated 497 874 560
Average Recorded Investment, With no related allowance recorded 5,400 6,019 6,109
Average Recorded Investment, With an allowance recorded 5,074 5,814 5,250
Average Recorded Investment 10,474 11,833 11,359
Interest Income Recognized, With no related allowance recorded 335 184 213
Interest Income Recognized, With related allowance recorded 196 223 179
Interest Income Recognized 531 407 392
Commercial      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 834 531 1,007
Unpaid Principal Balance, With an allowance recorded 81 1,444 1,462
Recorded Investment, With no related allowance recorded 631 511 971
Recorded Investment, With an allowance recorded 81 1,429 1,459
Allowance for Loan Losses Allocated 5 272 110
Average Recorded Investment, With no related allowance recorded 433 1,273 1,363
Average Recorded Investment, With an allowance recorded 540 818 594
Interest Income Recognized, With no related allowance recorded 23 22 25
Interest Income Recognized, With related allowance recorded 4 2 5
Consumer      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 214 185 111
Unpaid Principal Balance, With an allowance recorded 0 0 247
Recorded Investment, With no related allowance recorded 103 93 112
Recorded Investment, With an allowance recorded 0 0 251
Allowance for Loan Losses Allocated 0 0 82
Average Recorded Investment, With no related allowance recorded 81 166 9
Average Recorded Investment, With an allowance recorded 0 2 21
Interest Income Recognized, With no related allowance recorded 14 4 0
Interest Income Recognized, With related allowance recorded 0 0 0
Commercial real estate, Owner occupied | Commercial real estate      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 2,956 2,448 4,302
Unpaid Principal Balance, With an allowance recorded 1,597 2,882 886
Recorded Investment, With no related allowance recorded 2,436 2,318 3,762
Recorded Investment, With an allowance recorded 1,595 2,882 884
Allowance for Loan Losses Allocated 379 446 91
Average Recorded Investment, With no related allowance recorded 2,080 1,860 2,643
Average Recorded Investment, With an allowance recorded 2,008 2,104 2,536
Interest Income Recognized, With no related allowance recorded 106 46 137
Interest Income Recognized, With related allowance recorded 70 94 39
Commercial real estate, Non-owner occupied | Commercial real estate      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 343 391 491
Unpaid Principal Balance, With an allowance recorded 1,480 1,548 1,593
Recorded Investment, With no related allowance recorded 342 391 389
Recorded Investment, With an allowance recorded 1,480 1,548 1,588
Allowance for Loan Losses Allocated 50 68 75
Average Recorded Investment, With no related allowance recorded 372 653 438
Average Recorded Investment, With an allowance recorded 1,511 1,570 1,975
Interest Income Recognized, With no related allowance recorded 30 20 0
Interest Income Recognized, With related allowance recorded 79 81 87
Residential real estate, 1-4 family residential | Residential real estate      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 2,575 2,421 1,026
Unpaid Principal Balance, With an allowance recorded 769 944 1,458
Recorded Investment, With no related allowance recorded 2,310 2,156 961
Recorded Investment, With an allowance recorded 749 928 1,347
Allowance for Loan Losses Allocated 61 85 190
Average Recorded Investment, With no related allowance recorded 2,174 1,804 1,462
Average Recorded Investment, With an allowance recorded 919 1,207 112
Interest Income Recognized, With no related allowance recorded 147 79 51
Interest Income Recognized, With related allowance recorded 39 41 48
Residential real estate, Home equity lines of credit | Residential real estate      
Financing Receivable Impaired [Line Items]      
Unpaid Principal Balance, With no related allowance recorded 283 476 107
Unpaid Principal Balance, With an allowance recorded 87 90 148
Recorded Investment, With no related allowance recorded 268 251 99
Recorded Investment, With an allowance recorded 87 90 147
Allowance for Loan Losses Allocated 2 3 12
Average Recorded Investment, With no related allowance recorded 260 263 194
Average Recorded Investment, With an allowance recorded 96 113 12
Interest Income Recognized, With no related allowance recorded 15 13 0
Interest Income Recognized, With related allowance recorded $ 4 $ 5 $ 0