Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2015	$ 3,757	$ 123,480	$ 141,501	$ 7,418	$ (14,130)
Acquisition of treasury stock					(1,293)
Equity based compensation		139
Net income			4,074			$ 4,074
Additional minimum pension liability, net of tax				18
Unrealized holding (losses) gains arising during period, net of tax				891
Reclassification adjustment for (gains) losses included in net income, net of tax				(48)
Balance at Mar. 31, 2016	3,757	123,619	145,575	8,279	(15,423)	265,807
Balance at Dec. 31, 2016	3,757	123,166	148,027	10,371	(19,585)	265,736
Acquisition of treasury stock					(563)
Shares issued under employee benefit plans					43
Equity based compensation		27
Shares issued under employee benefit plans (value)		(10)
Net income			3,986			3,986
Additional minimum pension liability, net of tax				23
Unrealized holding (losses) gains arising during period, net of tax				3,410
Reclassification adjustment for (gains) losses included in net income, net of tax				(1,626)
Balance at Mar. 31, 2017	$ 3,757	$ 123,183	$ 152,013	$ 12,178	$ (20,105)	$ 271,026