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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The balance in our Accumulated other comprehensive loss is set forth in the following table:
 As of
December 31, 2021
As of
December 31, 2020
 (Dollars in thousands)
Foreign currency translation adjustments, net of tax$(22,330)$(2,725)
Commodities and interest rate derivatives, net of tax14,886 (16,916)
Total accumulated other comprehensive loss$(7,444)$(19,641)