Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax (provision)/benefit at statutory rate	$ (8,342)	$ (8,716)	$ 3,638
Permanent difference	2,532	9,127	(392)
(Increase)/decrease in valuation allowance	(1,305)	714	(976)
State income tax, net of federal benefit	(1,532)	240	(213)
Deferred tax asset adjustments	826	208	(485)
Unrecognized tax benefit	(831)	1,547	0
Foreign rate differential	12	(36)	1,107
Tax Reform impact	0	0	8,048
Rate change impact	814	(366)	(36)
Other	(430)	14	16
(Provision for)/benefit from income taxes	$ (9,884)	$ 370	$ (6,747)