Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares, outstanding		124,398
Total stockholders' equity	$ 513,276	$ 1,065	$ 1,146,509	$ 1,143,647	$ (1,765,574)	$ (12,371)
Net (loss) earnings	(4,237)			(4,237)
Total other comprehensive income (loss)	661					661
Exercise of stock options, shares		22
Exercise of stock options	477	$ 1	476
Vesting of restricted share units, net of shares withheld for employee taxes, shares		424
Vesting of restricted share units, net of shares withheld for employee taxes	0	$ 4	(4)
Tax effect of stock awards vested and options exercised	(8,466)		(8,466)
Stock-based compensation	41,410		41,410
Dividends declared	(20,063)			(20,063)
Net (loss) earnings	15,488
Total other comprehensive income (loss)	564
Common stock, shares, outstanding		124,844
Total stockholders' equity	523,058	$ 1,070	1,179,925	1,119,347	(1,765,574)	(11,710)
Net (loss) earnings	19,725			19,725
Total other comprehensive income (loss)	(97)					(97)
Exercise of stock options, shares		52
Exercise of stock options	783		783
Vesting of restricted share units, net of shares withheld for employee taxes, shares		85
Vesting of restricted share units, net of shares withheld for employee taxes	0	$ 1	(1)
Tax effect of stock awards vested and options exercised	(969)		(969)
Stock-based compensation	36,438		36,438
Dividends declared	(20,104)			(20,104)
Common stock, shares, outstanding		124,981
Total stockholders' equity	558,834	$ 1,071	1,216,176	1,118,968	(1,765,574)	(11,807)
Common stock, shares, outstanding		125,028
Total stockholders' equity	525,146	$ 1,080	1,298,094	1,077,189	(1,840,591)	(10,626)
Net (loss) earnings	47,330			47,330
Total other comprehensive income (loss)	3,104					3,104
Exercise of stock options, shares		55
Exercise of stock options	684	$ 1	683
Vesting of restricted share units, net of shares withheld for employee taxes, shares		204
Vesting of restricted share units, net of shares withheld for employee taxes	0	$ 31	(31)
Tax effect of stock awards vested and options exercised	(2,535)		(2,535)
Stock-based compensation	115,681		115,681
Dividends declared	(19,068)			(19,068)
Net (loss) earnings	1,712
Total other comprehensive income (loss)	7,249
Common stock, shares, outstanding		125,287
Total stockholders' equity	670,342	$ 1,112	1,411,892	1,105,451	(1,840,591)	(7,522)
Net (loss) earnings	(45,618)			(45,618)
Total other comprehensive income (loss)	4,145					4,145
Exercise of stock options, shares		19
Exercise of stock options	371		371
Vesting of restricted share units, net of shares withheld for employee taxes, shares		2
Vesting of restricted share units, net of shares withheld for employee taxes	0	$ 1	(1)
Stock-based compensation	15,425		15,425
Dividends declared	(19,072)			(19,072)
Common stock, shares, outstanding		125,308
Total stockholders' equity	$ 625,593	$ 1,113	$ 1,427,687	$ 1,040,761	$ (1,840,591)	$ (3,377)