Leases - Other Lease Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Lessee Disclosure [Abstract]
Operating cash flows from finance leases	$ 8,868	$ 9,488
Operating cash flows from operating leases	1,540	3,710
Financing cash flows from finance leases	6,082	5,461
Right-of-use assets obtained in exchange for new operating lease liabilities	1,227	6,983
Finance Leases
2021	14,949
2022	14,949
2023	14,949
2024	14,949
2025	14,949
Thereafter	40,583
Total lease payments	115,328
Less: imputed interest	(39,679)
Total finance lease liabilities	75,649	81,730
Operating Leases
2021	1,119
2022	929
2023	708
2024	234
2025	72
Thereafter	1,012
Total lease payments	4,074
Less: imputed interest	(696)
Total operating lease liabilities	3,378	3,545
Total
2021	16,068
2022	15,878
2023	15,657
2024	15,183
2025	15,021
Thereafter	41,595
Total lease payments	119,402
Less: imputed interest	(40,375)
Present value of lease liabilities	79,027
Lessor Disclosure [Abstract]
Lease income	$ 6,171	$ 6,071

Present value of lessee's discounted obligation for lease payments from finance lease and operating lease.

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

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Amount of lessee's undiscounted obligation for lease payments for finance lease and 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 finance lease and operating lease, due in second 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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Amount of interest paid on finance lease liability.

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-Name Accounting Standards Codification
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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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

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

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

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

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

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in second 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 finance lease.

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Amount of cash outflow for principal payment on finance 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 operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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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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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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