Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Common Class A [Member]	Common Class B [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2010	$ 140	$ 24	$ 90,842	$ (16,799)	$ 476	$ 26,015	$ 100,698
Net income (loss)						(14,267)	(14,267)
Other comprehensive income (loss)					(426)		(426)
Income tax benefit (deficit) arising from restricted stock vesting			432				432
Stock-based employee compensation cost			1,026				1,026
Issuance of restricted stock, net	3		(2,765)	2,354			(408)
Balance at Dec. 31, 2011	143	24	89,535	(14,445)	50	11,748	87,055
Net income (loss)						6,065	6,065
Other comprehensive income (loss)					270		270
Income tax benefit (deficit) arising from restricted stock vesting							100
Stock-based employee compensation cost			1,184				1,184
Issuance of restricted stock, net			(391)	490			99
Balance at Dec. 31, 2012	143	24	90,328	(13,955)	320	17,813	94,673
Net income (loss)						5,244	5,244
Other comprehensive income (loss)					513		513
Income tax benefit (deficit) arising from restricted stock vesting			(111)				(111)
Stock-based employee compensation cost			690				690
Reversal of previously recognized stock-based employee compensation expense			(409)				(409)
Issuance of restricted stock, net	2		(1,878)	1,636			(240)
Balance at Dec. 31, 2013	$ 145	$ 24	$ 88,620	$ (12,319)	$ 833	$ 23,057	$ 100,360