Additional Balance Sheet Detail and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Other Accrued Liabilities		$ 5,592	$ 3,327
Unrealized Gain (Loss) on Derivatives		1,374	24,950
Accrued Income Taxes, Current		13,856	26,118
Accrual for Taxes Other than Income Taxes, Current		3,284	3,616
Interest Payable, Current		8,038	1,855
Accrued Salaries, Current		28,408	30,457
Deferred Revenue	[1]	16,093	16,425
Accrued liabilities and other		$ 87,946	$ 119,158

[1] See Note 20 -- Commitments and Contingencies for additional details on deferred revenue liabilities