Accrued Liabilities (Schedule of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Accrued salaries, bonus, vacation and other benefits	$ 72,726	$ 99,524
Accrued import duties	18,741	30,847
Accrual for Taxes Other than Income Taxes	18,706	23,262
Product warranties	11,620	13,810	$ 13,645	$ 14,745
Other	46,358	45,950
Accrued liabilities, total	272,058	328,759
Provision for Loss on Contracts	$ 103,907	$ 115,366