Leases - Maturity of Lease Liabilities and Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Nov. 30, 2018
Maturity of Lease Liabilities
2021	$ 10,330
2022	10,345
2023	10,134
2024	10,351
2025	10,649
Thereafter	49,309
Total operating lease payments	101,118
Less: Estimated tenant improvement allowance	(12,053)	$ (15,600)
Less: Imputed interest	(31,978)
Present value of operating lease liabilities	57,087	55,487
Operating cash flows from operating leases	$ 3,804	$ 7,210
Weighted-average remaining lease term (years)	9 years 1 month 6 days
Weighted-average discount rate	8.64%
9.0% Non-Recourse 2033 Notes
Maturity of Lease Liabilities
Interest rate (as a percent)	9.00%	9.00%	9.00%

The amount of tenant improvement allowance on operating leases as of the balance sheet date.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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

+ References

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-Publisher FASB
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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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