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Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating lease costs |  |  |
Fixed | $ 124,781 | $ 127,571 | $ 127,990
Short-term | 31,849 | 27,654 | 23,658
Variable | 38,076 | 38,321 | 37,975
Sub-leases | (1,642) | (1,152) | (848)
Operating lease costs | 193,064 | 192,394 | 188,775
Finance lease costs |  |  |
Amortization of leased assets | 9,193 | 6,423 | 4,015
Interest on lease liabilities | 772 | 690 | 491
Finance lease costs | 9,965 | 7,113 | 4,506
Net lease costs | 203,029 | 199,507 | 193,281
Cost of Sales |  |  |
Operating lease costs |  |  |
Fixed | 20,130 | 25,067 | 30,002
Short-term | 13,415 | 11,633 | 9,725
Variable | 7,949 | 8,285 | 8,123
Sub-leases | (529) | (411) | (311)
Operating lease costs | 40,965 | 44,574 | 47,539
Selling, general and administrative expenses |  |  |
Operating lease costs |  |  |
Fixed | 104,651 | 102,504 | 97,988
Short-term | 18,434 | 16,021 | 13,933
Variable | 30,127 | 30,036 | 29,852
Sub-leases | (1,113) | (741) | (537)
Operating lease costs | 152,099 | 147,820 | 141,236
Depreciation and Amortization |  |  |
Finance lease costs |  |  |
Amortization of leased assets | 9,193 | 6,423 | 4,015
Interest on lease liabilities | 0 | 0 | 0
Finance lease costs | 9,193 | 6,423 | 4,015
Interest |  |  |
Finance lease costs |  |  |
Amortization of leased assets | 0 | 0 | 0
Interest on lease liabilities | 772 | 690 | 491
Finance lease costs | $ 772 | $ 690 | $ 491

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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=123408670&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=123391704&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=123414884&loc=SL77918982-209971 + Details
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- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. + 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=123408670&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=123391704&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=123414884&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=123414884&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=123408670&loc=SL77918686-209980 + Details
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