Consolidated Statement of Changes in Stockholders' Equity and Accumulated Other Comprehensive Loss (Unaudited) (USD $) In Thousands	Total	Common Stock Voting	Common Stock Non-Voting	Additional Paid-In Capital	Treasury Stock - Common Stock Voting	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2010	$ 234,476	$ 108	$ 9	$ 340,615	$ (70,000)	$ (34,605)	$ (1,651)
Comprehensive income:
Net income	36,161					36,161
Cumulative translation adjustment and foreign currency exchange hedge, net of tax	(509)						(509)
Unrealized net gain on securities available-for-sale, net of tax	468						468
Total comprehensive income	36,120
Stock-based compensation	4,997			4,997
Exercise of stock options and grants of restricted stock, net of surrenders on stock option exercises and withholding tax on stock vesting	449	2		447
Cash dividend on common stock	(10,236)					(10,236)
Conversion of Series B Preferred Stock to common stock voting	30,315			(20,687)	51,002
Tax benefit from the exercise of warrants in prior years	4,239			4,239
Windfall tax benefits from stock-based compensation	5,473			5,473
Balance at Sep. 30, 2011	$ 305,833	$ 110	$ 9	$ 335,084	$ (18,998)	$ (8,680)	$ (1,692)