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Commitments and Contingencies - Lease Cost (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Operating Lease Costs |  |  |  |
Operating lease costs before capitalized operating lease costs | $ 7,567 | $ 7,751 | $ 22,702 | $ 24,486
Operating lease costs capitalized | (1,010) | (778) | (2,699) | (2,315)
Operating lease costs, net | 6,557 | 6,973 | 20,003 | 22,171
Finance Lease, Costs [Abstract] |  |  |  |
Interest on financing leases | 1,229 | 2,198 | 4,215 | 6,010
Interest on financing leases capitalized | 0 | (588) | 0 | (2,378)
Interest on financing leases, net | 1,229 | 1,610 | 4,215 | 3,632
Finance lease, right-of-use asset, amortization | 180 | 304 | 540 | 914
Financing lease costs, net | $ 1,409 | $ 1,914 | $ 4,755 | $ 4,546
Operating lease, weighted average discount rate, percent | 4.59% |  | 4.59% |
Operating lease, weighted average remaining lease term | 28 years |  | 28 years |

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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