Leases - Future Minimum Cash Outflow and Weighted-average Remaining Lease Term and Discount Rate (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Future minimum lease payments finance lease
2020	$ 5,720
2021	5,848
2022	5,980
2023	6,114
2024	6,252
Thereafter	79,653
Total lease payments	109,567
Less interest portion	(61,019)
Finance lease obligations	48,548
Future minimum lease payments operating lease
2020	3,511
2021	1,838
2022	637
2023	128
2024	68
Thereafter	206
Total lease payments	6,388
Less interest portion	(691)
Operating lease obligations	5,697
Future minimum lease payments finance and operating lease
2020	9,231
2021	7,686
2022	6,617
2023	6,242
2024	6,320
Thereafter	79,859
Total lease payments	115,955
Less interest portion	(61,710)
Total lease liabilities	$ 54,245
Lease term and discount rate
Operating leases -Weighted-average remaining lease term (in years)	2 years 4 months 24 days
Finance leases - Weighted-average remaining lease term (in years)	17 years 1 month 6 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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