Commitments and Contingencies - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Gross Lease Commitments
Gross lease commitments, due 2020	$ 4,856
Gross lease commitments, due 2021	6,143
Gross lease commitments, due 2022	5,463
Gross lease commitments, due 2023	5,627
Gross lease commitment, due 2024	5,796
Gross lease commitment, due thereafter	15,794
Gross lease commitments due, total	43,679
Sublease Income
Sublease income, due 2020	(1,219)
Sublease income, due 2021	0
Sublease income, due 2022	0
Sublease income, due 2023	0
Sublease income, due 2024	0
Sublease income, due thereafter	0
Sublease income due, total	(1,219)
Net Lease Commitment
Net lease commitment, due 2020	3,637
Net lease commitment, due 2021	6,143
Net lease commitment, due 2022	5,463
Net lease commitment, due 2023	5,627
Net lease commitment, due 2024	5,796
Net lease commitment, due thereafter	15,794
Net lease commitment due, total	$ 42,460

Operating Leases, Future Minimum Payments Due, Net Of Sublease Income [Abstract]

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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