Stockholders' Equity (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued and outstanding, beginning balance (in shares)	70,596,559	69,818,392	69,015,690
Issuance of common stock from exercise of stock options (in shares)	187,504
Shares issued under ESPP (in shares)	207,324	175,966	224,928
Repurchase of common stock (in shares)	(2,510,376)	(1,190,995)	(1,549,434)
Awards effectively repurchased for required employee withholding taxes (in shares)	(451,639)	(458,232)	(335,101)
Shares issued and outstanding, ending balance (in shares)	69,065,491	70,596,559	69,818,392
Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from vested restricted stock units (in shares)	1,036,119	1,634,271	1,020,352
Equity Option
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options (in shares)	187,504	617,157	1,441,957
Employee Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under ESPP (in shares)	207,324	175,966	224,928