Additional Balance Sheet Detail and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Other Accrued Liabilities		$ 6,975	$ 5,592
Unrealized Gain (Loss) on Derivatives		1,878	1,374
Accrued Income Taxes, Current		7,987	13,856
Accrual for Taxes Other than Income Taxes, Current		2,844	3,284
Interest Payable, Current		3,160	8,038
Accrued Salaries, Current		22,253	28,408
Deferred Revenue	[1]	26,240	16,093
Accrued liabilities and other		$ 82,438	$ 87,946

[1] See Note 17 -- Commitments and Contingencies for additional details on deferred revenue liabilities