Leases - Supplemental Balance Sheet Information Related to Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Leases [Abstract]
Operating lease right-of-use assets	$ 51,981	$ 417
Operating lease liabilities - current	7,851	383
Operating lease liabilities - noncurrent	44,658
Operating lease, liability	$ 52,509	$ 383
Weighted average remaining lease term (years)	9 years 9 months 18 days	3 months 18 days
Weighted average discount rate	13.50%	6.00%