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Leases - Future Minimum Cash Outflow and Weighted-average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Future minimum lease payments finance lease
2021	$ 1,465
2022	5,980
2023	6,114
2024	6,252
2025	5,930
Thereafter	73,723
Total lease payments	99,464
Less interest portion	(51,871)
Finance lease obligations	47,593
Future minimum lease payments operating lease
2021	1,127
2022	3,980
2023	1,849
2024	838
2025	692
Thereafter	531
Total lease payments	9,017
Less interest portion	(923)
Operating lease obligations	8,094
Future minimum lease payments finance and operating lease
2021	2,592
2022	9,960
2023	7,963
2024	7,090
2025	6,622
Thereafter	74,254
Total lease payments	108,481
Less interest portion	(52,794)
Total lease liabilities	$ 55,687	$ 52,671
Lease term and discount rate
Operating leases -Weighted-average remaining lease term (in years)	3 years
Finance leases - Weighted-average remaining lease term (in years)	15 years 3 months 18 days
Operating leases - Weighted-average discount rate	4.50%
Finance leases - Weighted-average discount rate	10.50%
Finance lease term	22 years
Minimum
Lease term and discount rate
Operating lease term	1 year
Maximum
Lease term and discount rate
Operating lease term	10 years

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