Leases - Future Minimum Cash Outflow and Weighted-average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Future minimum lease payments finance lease
2020	$ 1,433
2021	5,848
2022	5,980
2023	6,114
2024	6,252
Thereafter	79,653
Total lease payments	105,280
Less interest portion	(56,982)
Finance lease obligations	48,298
Future minimum lease payments operating lease
2020	935
2021	2,447
2022	1,128
2023	337
2024	98
Thereafter	219
Total lease payments	5,164
Less interest portion	(577)
Operating lease obligations	4,587
Future minimum lease payments finance and operating lease
2020	2,368
2021	8,295
2022	7,108
2023	6,451
2024	6,350
Thereafter	79,872
Total lease payments	110,444
Less interest portion	(57,559)
Total lease liabilities	$ 52,885	$ 54,245
Lease term and discount rate
Operating leases -Weighted-average remaining lease term (in years)	1 year 6 months
Finance leases - Weighted-average remaining lease term (in years)	16 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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