Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 823	$ 7,008	$ 4,383	$ 12,903
Effective tax rate	3.90%	30.00%	10.50%	29.90%
Discrete item	$ 1,624		$ 3,681
Uncertain tax position, tax expense (benefit)	(3,153)		(3,153)
Uncertain tax position, interest amount, tax expense (benefit)	(1,433)		(1,433)
Reversal of earn-out liability		$ 3,810		$ 4,060
Unrecognized tax benefits	1,452		1,452		$ 3,087
Interest expense	0	$ 49
Accrued interest and penalties	$ 240		$ 240		$ 1,553