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Leases - Finance leases (Details) - USD ($) $ in Thousands	Jul. 01, 2021	Dec. 31, 2020
Fixed assets:
Property and equipment - gross	$ 1,515,948	$ 1,521,906
Accumulated depreciation and amortization	(707,600)	(673,578)
Property and equipment - net	808,348	848,328
Finance leases
Fixed assets:
Property and equipment - gross	74,912	75,322
Accumulated depreciation and amortization	(56,573)	(55,547)
Property and equipment - net	$ 18,339	$ 19,775

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
-Subparagraph (b)
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