CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Comprehensive Income	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income
Balance at Dec. 31, 2008	$ 91,942	$ 183	$ 60,803		$ 33,544	$ (2,588)
Balance (in shares) at Dec. 31, 2008		18,304,314
Increase (Decrease) in Stockholders' Equity
Net income	13,970			13,970	13,970
Comprehensive income				13,970
Dividend paid	(13,068)				(13,068)
Stock-based compensation	655		655
Issuance of restricted common stock net of forfeitures (in shares)		1,300
Repurchase of common stock: 140 shares	(2)					(2)
Other	1		1
Balance at Dec. 31, 2009	93,498	183	61,459		34,446	(2,590)
Balance (in shares) at Dec. 31, 2009		18,305,614
Increase (Decrease) in Stockholders' Equity
Net income	12,584			12,584	12,584
Foreign currency translation	676			676			676
Comprehensive income				13,260
Dividend paid	(13,090)				(13,090)
Tax benefit of equity based awards	10		10
Stock-based compensation	988		988
Stock option exercises	46		46
Stock option exercises (in shares)		5,000
Issuance of restricted common stock from treasury shares			(611)			611
Balance at Dec. 31, 2010	94,712	183	61,892		33,940	(1,979)	676
Balance (in shares) at Dec. 31, 2010		18,310,614
Increase (Decrease) in Stockholders' Equity
Net income	18,370			18,370	18,370
Foreign currency translation	(793)			(793)			(793)
Comprehensive income				17,577
Dividend paid	(13,113)				(13,113)
Tax benefit of equity based awards	8		8
Stock-based compensation	837		837
Stock option exercises	142		142
Stock option exercises (in shares)		9,600
Issuance of restricted common stock from treasury shares			(424)			424
Balance at Dec. 31, 2011	$ 100,163	$ 183	$ 62,455		$ 39,197	$ (1,555)	$ (117)
Balance (in shares) at Dec. 31, 2011		18,320,214