Income Taxes (Reconciliation Of Effective Income Tax Rate Statutory Federal Income Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Taxes [Line Items]
US federal statutory tax rate, amount	$ (10,742)	$ (25,175)
State and local income taxes, net of federal income tax effect, amount	262	2,723
Effect of cross-border tax laws, amount	583	666
Tax credits, amount	(233)	(365)
Income taxed to owners of non-controlling interest, amount	(1,513)	(1,490)
Other, amount	365	248
Worldwide changes in prior year unrecognized tax benefits, amount	(61)	(573)
Total provision (benefit) for income taxes	$ 2,748	$ 26,631
US federal statutory tax rate, percent	21.00%	21.00%
State and local income taxes, net of federal income tax effect, percent	(0.50%)	(2.30%)
Effect of cross-border tax laws, percent	(1.10%)	(0.60%)
Tax credits, percent	0.40%	0.30%
Income taxed to owners of non-controlling interest, percent	3.00%	1.20%
Other, percent	(0.70%)	(0.20%)
Worldwide changes in prior year unrecognized tax benefits, percent	0.10%	0.50%
Effective tax rate	(5.40%)	(22.20%)
Canada Tax Authority [Member]
Income Taxes [Line Items]
Changes in valuation allowance, amount	$ 1,275	$ 569
Other, amount	$ (166)	$ 756
Changes in valuation allowance, percent	(2.50%)	(0.50%)
Other, percent	0.30%	(0.60%)
Austria Tax Authority [Member]
Income Taxes [Line Items]
Changes in valuation allowance, amount	$ (750)	$ (1,135)
Withholding taxes, amount	708	701
Other, amount	$ (331)	$ 435
Changes in valuation allowance, percent	1.50%	1.00%
Withholding taxes, percent	(1.40%)	(0.60%)
Other, percent	0.60%	(0.40%)
Poland Tax Authority [Member]
Income Taxes [Line Items]
Foreign tax effects, amount	$ 595	$ 391
Foreign tax effects, percent	(1.20%)	(0.30%)
Mauritius Tax Authority [Member]
Income Taxes [Line Items]
Foreign tax effects, amount	$ 5	$ 28
Foreign tax effects, percent	0.00%	0.00%
US Federal Tax Authority [Member]
Income Taxes [Line Items]
Changes in valuation allowance, amount	$ 12,751	$ 48,852
Changes in valuation allowance, percent	(24.90%)	(40.70%)