Leases - Leases, Liability, Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (remaining nine months)	$ 2,423
2021	3,093
2022	3,089
2023	3,039
2024	2,943
Thereafter	8,266
Total future minimum lease payments	22,853
Less imputed interest	(4,736)
Total	$ 18,117	$ 18,629