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					(4,745)
Shares issued under employee benefit plans					58
Equity based compensation		228
Shares issued under employee benefit plans (value)		(58)
Net (loss) income			5,140			$ 5,140
Additional minimum pension liability, net of tax				37
Unrealized holding gains arising during period, net of tax				3,724
Reclassification adjustment for losses (gains) included in net income, net of tax				(315)
Balance at Jun. 30, 2016	3,757	123,650	146,641	10,864	(18,817)	266,095
Balance at Mar. 31, 2016	3,757	123,619	145,575	8,279	(15,423)
Acquisition of treasury stock					(3,452)
Shares issued under employee benefit plans					58
Equity based compensation		89
Shares issued under employee benefit plans (value)		(58)
Net (loss) income			1,066			1,066
Additional minimum pension liability, net of tax				19
Unrealized holding gains arising during period, net of tax				2,833
Reclassification adjustment for losses (gains) included in net income, net of tax				(267)
Balance at Jun. 30, 2016	3,757	123,650	146,641	10,864	(18,817)	266,095
Balance at Dec. 31, 2016	3,757	123,166	148,027	10,371	(19,585)	265,736
Acquisition of treasury stock					(4,425)
Shares issued under employee benefit plans					247
Equity based compensation		46
Shares issued under employee benefit plans (value)		(102)
Net (loss) income			636			636
Additional minimum pension liability, net of tax				46
Unrealized holding gains arising during period, net of tax				5,135
Reclassification adjustment for losses (gains) included in net income, net of tax				(1,619)
Balance at Jun. 30, 2017	3,757	123,110	148,663	13,933	(23,763)	265,700
Balance at Mar. 31, 2017	3,757	123,183	152,013	12,178	(20,105)
Acquisition of treasury stock					(3,862)
Shares issued under employee benefit plans					204
Equity based compensation		19
Shares issued under employee benefit plans (value)		(92)
Net (loss) income			(3,350)			(3,350)
Additional minimum pension liability, net of tax				23
Unrealized holding gains arising during period, net of tax				1,725
Reclassification adjustment for losses (gains) included in net income, net of tax				7
Balance at Jun. 30, 2017	$ 3,757	$ 123,110	$ 148,663	$ 13,933	$ (23,763)	$ 265,700