Segment Reporting (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Revenues          
Interest income $ 4,380 $ 4,104 $ 12,703 $ 11,890  
Gain on sale of loans 1,395 2,043 4,195 4,630  
Other revenues 683 1,306 2,046 3,398  
Total revenues 6,458 7,453 18,944 19,918  
Expenses          
Interest expense 688 660 1,997 1,958  
Salaries and benefits 2,985 3,045 9,042 8,463  
Commissions 431 533 1,180 1,163  
Other expenses 1,975 2,635 5,466 6,693  
Total operating expenses 6,079 6,873 17,685 18,277  
Income (loss) before income taxes 379 580 1,259 1,641  
Total assets 464,706 446,291 464,706 446,291 $ 444,802
Consolidation, Eliminations [Member]          
Revenues          
Interest income (5) (56) (15) (98)  
Gain on sale of loans 0 0 0 0  
Other revenues (41) (32) (137) (129)  
Total revenues (46) (88) (152) (227)  
Expenses          
Interest expense (5) (56) (15) (98)  
Salaries and benefits 0 0 0 0  
Commissions 0 0 0 0  
Other expenses (41) (32) (137) (129)  
Total operating expenses (46) (88) (152) (227)  
Income (loss) before income taxes 0 0 0 0  
Total assets (12,975) (14,314) (12,975) (14,314)  
Commercial and Industrial Sector [Member]          
Revenues          
Interest income 4,313 3,995 12,513 11,625  
Gain on sale of loans 0 0 0 0  
Other revenues 566 1,109 1,680 2,994  
Total revenues 4,879 5,104 14,193 14,619  
Expenses          
Interest expense 688 660 1,997 1,958  
Salaries and benefits 2,010 2,066 6,090 5,828  
Commissions 0 0 0 0  
Other expenses 1,775 2,370 4,914 6,014  
Total operating expenses 4,473 5,096 13,001 13,800  
Income (loss) before income taxes 406 8 1,192 819  
Total assets 467,558 450,043 467,558 450,043  
Mortgage Backed Securities, Other [Member]          
Revenues          
Interest income 72 165 205 363  
Gain on sale of loans 1,395 2,043 4,195 4,630  
Other revenues 158 229 503 533  
Total revenues 1,625 2,437 4,903 5,526  
Expenses          
Interest expense 5 56 15 98  
Salaries and benefits 975 979 2,952 2,635  
Commissions 431 533 1,180 1,163  
Other expenses 241 297 689 808  
Total operating expenses 1,652 1,865 4,836 4,704  
Income (loss) before income taxes (27) 572 67 822  
Total assets $ 10,123 $ 10,562 $ 10,123 $ 10,562