Consolidated Statements of Stockholders' Equity and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Retained Earnings	Noncontrolling Interest	Dividend Paid [Member]
Balances (in shares) at Dec. 31, 2012		428,593
Balances at Dec. 31, 2012	$ 996,638	$ 429	$ 881,945	$ 6,412	$ 107,852	$ 0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(22,055)				(22,055)
Other Comprehensive Income (Loss)	6,385			6,385
Noncontrolling interest	0
Share-based compensation expense	42,454		42,454
Equity related restructuring charges	566		566
Tax benefit on share-based compensation expense	$ (913)		(913)
Exercise of stock options (in shares)	0	2,990
Exercise of stock options	$ 12,343	$ 3	12,340
Issuance of common stock under employee stock purchase plan (in shares)		1,920
Issuance of common stock under employee stock purchase plan	10,605	$ 2	10,603
Vested restricted stock units (in shares)		7,335
Vested restricted stock units	0	$ 7	(7)
Shares withheld for employee taxes related to vested restricted stock units (in shares)		(3,256)
Shares withheld for employee taxes related to vested restricted stock units	$ (20,315)	$ (4)	(20,311)
Repurchase of common stock (in shares)	(12,200)	(12,192)
Repurchase of common stock	$ (87,781)	$ (12)	(87,769)
Balances (in shares) at Dec. 31, 2013		425,390
Balances at Dec. 31, 2013	937,927	$ 425	838,908	12,797	85,797	0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	32,195				32,195
Other Comprehensive Income (Loss)	(20,979)			(20,979)
Noncontrolling interest	3,013					3,013
Share-based compensation expense	$ 59,816		59,816
Exercise of stock options (in shares)	0	603
Exercise of stock options	$ 2,362	$ 0	2,362
Issuance of common stock under employee stock purchase plan (in shares)		1,695
Issuance of common stock under employee stock purchase plan	11,168	$ 2	11,166
Vested restricted stock units (in shares)		7,972
Vested restricted stock units	8	$ 8	0
Shares withheld for employee taxes related to vested restricted stock units (in shares)		(3,211)
Shares withheld for employee taxes related to vested restricted stock units	$ (25,128)	$ (3)	(25,125)
Repurchase of common stock (in shares)	(16,300)	(16,271)
Repurchase of common stock	$ (130,383)	$ (16)	(130,367)
Balances (in shares) at Dec. 31, 2014		416,178
Balances at Dec. 31, 2014	869,999	$ 416	756,760	(8,182)	117,992	3,013
Increase (Decrease) in Stockholders' Equity
Net income (loss)	26,891				26,891
Other Comprehensive Income (Loss)	(3,473)			(3,473)
Noncontrolling interest	11					11
Dividends, Common Stock, Cash	(50,238)						$ (50,238)
Share-based compensation expense	$ 51,788		51,788
Exercise of stock options (in shares)	0	709
Exercise of stock options	$ 2,874	$ 0	2,874
Issuance of common stock under employee stock purchase plan (in shares)		1,634
Issuance of common stock under employee stock purchase plan	11,100	$ 2	11,098
Vested restricted stock units (in shares)		6,723
Vested restricted stock units	0	$ 7	(7)
Shares withheld for employee taxes related to vested restricted stock units (in shares)		(2,485)
Shares withheld for employee taxes related to vested restricted stock units	$ (20,284)	$ (3)	(20,281)
Repurchase of common stock (in shares)	(1,400)	(1,449)
Repurchase of common stock	$ (11,984)	$ (1)	(11,983)
Balances (in shares) at Dec. 31, 2015		421,310
Balances at Dec. 31, 2015	$ 876,684	$ 421	$ 790,249	$ (11,655)	$ 94,645	$ 3,024