Stockholders' Equity (Details) - USD ($)	3 Months Ended		15 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Jan. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Share repurchase program, authorized amount				$ 60,000,000.0
Common stock repurchased and retired (in shares)	0		831,744
Stock repurchased and retired during period, value			$ 20,000,000
Average share price (in usd per share)			$ 24.05
Decrease in total stockholders' equity	$ (10,300,000)
Net loss	(36,560,000)	$ (7,527,000)
Accounting Standards Update 2016-09, Excess Tax Benefit Component | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative- effect adjustment	$ 21,600,000		$ 21,600,000