Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Fixed lease expense	$ 2,036	$ 1,026
Variable lease expense	301	348
Total lease expense	2,337	1,374
Sublease income	$ 300	300
Weighted-average remaining operating lease term	11 years 1 month 6 days
Weighted-average operating lease discount rate	5.50%
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2020	$ (2,344)
2021	2,270
2022	4,706
2023	4,808
2024	4,911
Thereafter	35,337
Total undiscounted cash flows	49,688
Imputed interest	(15,992)
Present value of cash flows	33,696
Operating lease liabilities payments	1,200	900
Lease liabilities from new ROU assets obtained	20,400	$ 9,400
Lessee, Lease, Description [Line Items]
Undiscounted lease payments	49,688
Lease liabilities—current	2,187			$ 3,223
Lease liabilities—long-term	31,509			5,865
Total operating lease liabilities	33,696			9,088
Right of use lease asset	29,224			$ 10,151
Corporate Office Headquarters
Operating Lease Liabilities, Payments Due [Abstract]
Total undiscounted cash flows	45,200
Lessee, Lease, Description [Line Items]
Undiscounted lease payments	45,200
Tenant improvement allowance	$ 9,700
Total operating lease liabilities			$ 20,400
Right of use lease asset			$ 20,700