Income Taxes - Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Reserves for loan losses	$ 8,551	$ 8,387
Net operating loss carryforward	7,682	10,962
Alternative minimum tax credit	2,491	2,125
Deferred compensation	1,608	1,703
Forgone interest on non-accrual loans	1,472	1,424
Deferred income	1,034	2,137
Accruals	942	1,035
Fair value adjustment for purchased assets and liabilities	727	1,436
Premises and equipment		149
Charitable contributions carryforward		71
Deferred tax assets	24,507	29,429
Deferred tax liabilities
State deferred tax	1,656	2,306
Premises and equipment	638
Deferred costs, prepaids and FHLB advances	573	1,465
Investment securities valuation	368	738
Total deferred tax liabilities	3,235	4,509
Net deferred tax assets	21,272	$ 24,920
State tax
Deferred tax assets
Alternative minimum tax credit	$ 600