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Leases - Balance sheet (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Leases |  |
Operating lease ROU assets | $ 78,699 | $ 84,410
Operating lease liabilities- current | 7,144 | 7,465
Operating lease liabilities- noncurrent | 74,823 | 79,499
Total operating lease liability | 81,967 | 86,964
Finance lease liabilities- current | 2,557 | 1,276
Finance lease liabilities- noncurrent | 20,053 | 23,053
Total finance lease liability | $ 22,610 | $ 24,329

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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