Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities (Schedule of Accrued Liabilities) (Details)

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Accrued Liabilities (Schedule of Accrued Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accrued Liabilities, Current [Abstract]        
Accrued salaries, bonus, vacation and other benefits $ 121,074 $ 80,074    
Accrued import duties 17,272 18,522    
Accrual for Taxes Other than Income Taxes 27,930 15,002    
Product warranties 13,645 14,745 $ 14,466 $ 13,186
Other 37,566 45,760    
Accrued liabilities, total 316,485 257,278    
Provision for Loss on Contracts $ 98,998 $ 83,175