Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Operating Leases
2020 (excluding the six months ended June 30, 2020)	$ 2,319
2021	7,434
2022	8,060
2023	8,145
2024	8,526
2025	9,223
Thereafter	57,379
Total lease payments	101,086
Less: imputed interest	(51,517)
Total	49,569
Finance Leases
2020 (excluding the six months ended June 30, 2020)	810
2021	1,620
2022	859
2023	0
2024	0
2025	0
Thereafter	0
Total lease payments	3,289
Less: imputed interest	(184)
Total	$ 3,105