CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Surplus (Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2008	$ 131,972	$ 116	$ 160,919	$ (28,622)	$ (441)
Components of comprehensive income:
Net income	6,016			6,016
Foreign currency translation adjustments	2,858				2,858
Total comprehensive income (loss)	8,874			6,016	2,858
Issuance of common stock to non-employee directors (6,840 in 2011, 7,835 in 2010 and 14,562 in 2009)	75		75
Exercise of stock options (468,204 in 2011, 74,125 in 2010 and 18,955 in 2009)	119		119
Stock-based compensation expense	399		399
Ending Balance at Dec. 31, 2009	141,439	116	161,512	(22,606)	2,417
Components of comprehensive income:
Net income	11,707			11,707
Foreign currency translation adjustments	(2,351)				(2,351)
Total comprehensive income (loss)	9,356			11,707	(2,351)
Issuance of common stock to non-employee directors (6,840 in 2011, 7,835 in 2010 and 14,562 in 2009)	93		93
Exercise of stock options (468,204 in 2011, 74,125 in 2010 and 18,955 in 2009)	444	1	443
Stock-based compensation expense	399		399
Dividends paid, $0.48 per share in 2011 and $0.10 per share in 2010	(1,163)			(1,163)
Ending Balance at Dec. 31, 2010	150,568	117	162,447	(12,062)	66
Components of comprehensive income:
Net income	23,008			23,008
Foreign currency translation adjustments	71				71
Total comprehensive income (loss)	23,079			23,008	71
Issuance of common stock to non-employee directors (6,840 in 2011, 7,835 in 2010 and 14,562 in 2009)	100		100
Exercise of stock options (468,204 in 2011, 74,125 in 2010 and 18,955 in 2009)	2,767	5	2,762
Repurchase of common stock	(20,000)	(12)	(19,988)
Stock-based compensation expense	399		399
Excess tax effect for stock-based compensation	1,284		1,284
Dividends paid, $0.48 per share in 2011 and $0.10 per share in 2010	(5,546)			(5,546)
Ending Balance at Dec. 31, 2011	$ 152,651	$ 110	$ 147,004	$ 5,400	$ 137