Consolidated Statement of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2010	$ 176,055	$ 142,318	$ 111,049	$ (4,778)	$ (72,534)
Beginning balance, shares at Dec. 31, 2010		30,938
Comprehensive income:
Net income	2,962		2,962
Comprehensive income (loss)	(1,773)			(1,773)
Stock based compensation, shares		13
Stock based compensation	127	86	(100)		141
Ending balance at Mar. 31, 2011	177,371	142,404	113,911	(6,551)	(72,393)
Ending balance, shares at Mar. 31, 2011		30,951
Beginning balance at Dec. 31, 2011	188,745	128,031	110,681	5,032	(54,999)
Beginning balance, shares at Dec. 31, 2011		32,598
Comprehensive income:
Net income	3,796		3,796
Comprehensive income (loss)	(2,883)			(2,883)
Stock based compensation, shares		278
Stock based compensation	356	(5)	(2,750)		3,111
Ending balance at Mar. 31, 2012	$ 190,014	$ 128,026	$ 111,727	$ 2,149	$ (51,888)
Ending balance, shares at Mar. 31, 2012		32,876