Operating Lease Liabilities - Operating Lease Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Leases After Adoption
2020 (remaining 9 months)	$ 3,391
2021	5,094
2022	5,242
2023	5,213
2024	1,799
2025 and thereafter	3,071
Total lease payments	23,810
Less: imputed interest	(2,149)
Less: tenant allowance	(3,308)
Total operating lease liabilities	18,353
Operating lease liabilities, current	2,877
Operating lease liabilities, noncurrent	15,476
Total operating lease liabilities	$ 18,353
Operating Leases Before Adoption
2020		$ 3,908
2021		5,055
2022		5,233
2023		5,141
2024		1,756
Thereafter		3,068
Total future minimum payments		$ 24,161

Lessee, Operating Lease, Tenant Allowance

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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