Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Tax Contingency [Line Items]
Effective tax rate (percent)	32.30%	35.20%
Unrecognized tax benefits	$ 6,300
Unrecognized tax benefits that would decrease the effective tax rate if recognized	6,100
Unrecognized tax benefits that could be recognized within 12 months	1,500
Unrecognized tax benefits, penalties accrued	500
Stock-based compensation, excess tax benefit, amount	$ 1,100
Retained Earnings | Accounting Standards Update 2016-09, Excess Tax Benefit Component
Income Tax Contingency [Line Items]
Cumulative effect adjustment			$ 13,000