Income Taxes Temporary Differences (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Allowance for loan losses	$ 5,735	$ 5,522
Available-for-sale investment securities	0	559
Deferred compensation	1,046	1,108
Supplemental retirement	281	317
Core deposit premium and other intangible assets	400	173
Other-than-temporary impairment on securities	438	449
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	197	183
Deferred Tax Assets, Deferred Income	98	127
Deferred Tax Assets Acquisition Expenses	430	168
Other	155	137
Total gross deferred tax assets	8,780	8,743
Deferred loan costs	133	110
Intangibles amortization	3,791	3,441
Prepaid expenses	340	296
FHLB stock dividend	278	285
Depreciation	766	600
Purchase accounting	7	0
Accumulated accretion	72	39
Available-for-sale investment securities	462	0
Total gross deferred tax liabilities	5,849	4,771
Net deferred tax assets	$ 2,931	$ 3,972