Stockholders' Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jan. 31, 2016
Stockholders' Equity Note [Abstract]
Share repurchase program, authorized amount					$ 60,000,000.0
Common stock repurchased and retired (in shares)			831,744
Stock repurchased and retired during period, value			$ 20,000,000
Average share price (in usd per share)			$ 24.05
Increase in total stockholders' equity			$ 5,700,000
Net income	$ 16,196,000	$ (20,584,000)	8,074,000	$ 25,578,000
Increase in stockholders' equity related to equity-based compensation expense			$ 16,800,000