Income Taxes, Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets [Abstract]
Allowance for loan losses	$ 4,134	$ 3,858
Deferred compensation	184	243
Retirement compensation	1,623	1,525
Stock option compensation	266	264
Post retirement benefits	430	425
Current state franchise taxes	365	186
Non-accrual interest	206	230
Tax credit carryovers	0	937
Other	37	32
Deferred tax assets	7,245	7,700
Deferred tax liabilities [Abstract]
Fixed assets depreciation	1,504	1,364
FHLB dividends	260	260
Tax credit - loss on pass-through	190	155
Deferred loan costs	1,091	1,038
Investment securities unrealized gain	100	469
Total deferred tax liabilities	3,145	3,286
Net deferred tax assets (see Note 7)	$ 4,100	$ 4,414