Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

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Property and Equipment (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property and Equipment (Details) [Line Items]      
Depreciation expense $ 23,292,000 $ 30,268,000 $ 47,909,000
Capital Investment Activities [Member]      
Property and Equipment (Details) [Line Items]      
Capitalized interest $ 628,000 $ 224,000 $ 563,000