Income Taxes - Schedule of Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits
Unrecognized benefit — beginning of period	$ 10,723	$ 3,115	$ 2,805
Gross increases — current year tax positions	963	7,608	310
Gross decreases — prior year tax positions	(7,215)	0	0
Unrecognized benefit — end of period	$ 4,471	$ 10,723	$ 3,115