Regulatory (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Regulatory Assets
Total stockholders' equity	$ 109,293		$ 104,426
AOCI Losses (Gains)	489	$ 801	928	$ (54)	$ 12	$ 251
Common equity Tier 1 capital	109,782		105,354
TRUPs	12,000		12,000
Tier 1 capital	121,782		117,354
Allowable reserve for credit losses and other Tier 2 adjustments	10,454		9,860
Subordinated notes	23,000		23,000
Tier 2 capital	155,236		150,214
Risk-weighted assets ("RWA")	1,131,264		1,104,505
Average Assets ("AA")	$ 1,376,625		$ 1,300,445
Common Tier 1 capital to RWA, 2019 Regulatory Min. Ratio + CCB	7.00%
Tier 1 capital to RWA, 2019 Regulatory Min. Ratio + CCB	8.50%
Tier 2 capital to RWA, 2019 Regulatory Min. Ratio + CCB	10.50%
Common Tier 1 capital to RWA	9.70%		9.54%
Tier 1 capital to RWA	10.77%		10.62%
Tier 2 capital to RWA	13.72%		13.60%
Tier 1 capital to AA (leverage)	8.85%		9.02%
Common Stock [Member]
Regulatory Assets
Total stockholders' equity	$ 109,293		$ 104,426
Bank [Member]
Regulatory Assets
AOCI Losses (Gains)	489		928
Common equity Tier 1 capital	138,874		137,037
Tier 1 capital	138,874		137,037
Allowable reserve for credit losses and other Tier 2 adjustments	10,454		9,860
Tier 2 capital	149,328		146,897
Risk-weighted assets ("RWA")	1,127,902		1,102,116
Average Assets ("AA")	$ 1,373,665		$ 1,298,145
Common Tier 1 capital to RWA	12.31%		12.43%
Tier 1 capital to RWA	12.31%		12.43%
Tier 2 capital to RWA	13.24%		13.33%
Tier 1 capital to AA (leverage)	10.11%		10.56%
Bank [Member] | Common Stock [Member]
Regulatory Assets
Total stockholders' equity	$ 138,385		$ 136,109