Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
NOLs	$ 49,846	$ 36,326
Income tax credits	92,368	93,257
Property, plant and equipment	15,328	20,181
Deferred interest expense	0	3,397
Accrued liabilities	39,929	49,554
Receivable	29,178	30,996
Unrealized foreign exchange loss	8,018	11,409
Revenue Recognition	1,564	0
Operating lease liabilities	26,955	27,446
Other	14,665	13,407
Total deferred tax assets	277,851	285,973
Valuation allowance	(101,869)	(122,357)
Total deferred tax assets net of valuation allowance	175,982	163,616
Property, plant and equipment	50,215	40,334
Deferred gain	7,839	10,873
Unrealized foreign exchange gain	5,242	3,212
Unbilled receivables	822	5,218
Operating lease right of use assets	26,241	26,120
Other	7,433	5,241
Total deferred tax liabilities	97,792	90,998
Other assets	86,616	83,596
Other non-current liabilities	(8,426)	(10,978)
Net deferred tax assets	$ 78,190	$ 72,618