CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2008	$ 179,412	$ 3,751	$ 119,928	$ 72,242	$ (16,432)	$ (77)
Beginning Balance (in shares) at Dec. 31, 2008		20,842				8
Cumulative effect of adjustments resulting from adoption of change in accounting principle, net of tax (note 1)				1,665	(1,665)
Acquisition of treasury shares (in shares)						750
Acquisition of treasury shares	(5,250)					(5,250)
Amortization of fair value of stock options granted	1,334		1,334
Stock options exercised (in shares)		31
Stock options exercised	115	6	109
Accretion of redeemable non-controlling interest	(355)		(355)
Net (loss) income	24,575			24,575
Other comprehensive income (loss) after tax	26,686				26,686
Ending Balance at Dec. 31, 2009	226,517	3,757	121,016	98,482	8,589	(5,327)
Ending Balance (in shares) at Dec. 31, 2009		20,873				758
Amortization of fair value of stock options granted	1,114		1,114
Stock options exercised (in shares)						(9)
Stock options exercised	25		(40)			65
Accretion of redeemable non-controlling interest	(275)		(275)
Net (loss) income	7,334			7,334
Other comprehensive income (loss) after tax	1,048				1,048
Ending Balance at Dec. 31, 2010	235,763	3,757	121,815	105,816	9,637	(5,262)
Ending Balance (in shares) at Dec. 31, 2010		20,873				749
Acquisition of treasury shares (in shares)						875
Acquisition of treasury shares	(6,401)					(6,401)
Amortization of fair value of stock options granted	709		709
Stock options exercised (in shares)						(15)
Stock options exercised	99		(6)			105
Accretion of redeemable non-controlling interest	(31)		(31)
Net (loss) income	(10,821)			(10,821)
Other comprehensive income (loss) after tax	(3,191)				(3,191)
Ending Balance at Dec. 31, 2011	$ 216,127	$ 3,757	$ 122,487	$ 94,995	$ 6,446	$ (11,558)
Ending Balance (in shares) at Dec. 31, 2011		20,873				1,609