Leases - Lease Cost and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 1,926	$ 1,472	$ 2,526	$ 2,899
Short-term lease cost	757	326	1,077	803
Variable lease costs	60	0	272	0
Total lease cost	2,743	1,798	3,875	3,702
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	(1,926)	$ (1,472)	(2,526)	(2,899)
Leased assets obtained in exchange for new operating lease liabilities	$ 15,779		$ 15,779	$ 0
Weighted-average remaining lease term (years) for operating leases	3 years 9 months 18 days		3 years 9 months 18 days
Weighted-average discount rate (2) operating leases	5.80%		5.80%