Commitments and Contingencies - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 7,573
Finance lease cost
Amortization of right-of-use assets	255
Interest on lease liabilities	24
Variable lease cost	2,515
Lease, cost	10,367
Operating Lease, Assets And Liabilities, Lessee [Abstract]
Right-of-use assets obtained in exchange for operating lease obligations:	$ 940
Weighted average remaining lease term, in years
Operating leases	6 years
Finance leases	1 year
Weighted Average Discount Rate
Operating leases	4.70%
Finance leases	4.20%