Consolidated Statements of Changes In Stockholders' Equity (Unaudited) (USD $) In Thousands	Total	Additional Paid-In Capital	Treasury Stock - Common Stock Voting	Retained Earnings (Deficit) Earnings	Accumulated Other Comprehensive Loss	Common Stock Voting
Balance at Dec. 31, 2012	$ 242,717	$ 283,609	$ (32,273)	$ (5,644)	$ (3,093)	$ 118
Net income	15,326			15,326
Cumulative translation adjustment and foreign currency exchange hedge, net of tax	116				116
Unrealized net (loss) on securities available-for-sale, net of tax	(506)				(506)
Stock-based compensation	1,997	1,997
Exercise of stock options	630	629				1
Withholding tax payments on restricted stock vesting and stock option exercises	(5,001)	(5,001)
Excess tax benefits from stock-based compensation	1,927	1,927
Cash dividend on common stock	(4,705)			(4,705)
Balance at Mar. 31, 2013	$ 252,501	$ 283,161	$ (32,273)	$ 4,977	$ (3,483)	$ 119