Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	$ 8,160	$ 9,579
Equipment under Finance Leases	$ 187	264
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, net of current portion and unamortized debt issuance costs
Total debt	$ 620,212	619,969
Less current portion of long-term debt and finance leases	2,488	1,641
Long-term debt, net of current portion and unamortized debt issuance costs	609,564	608,749
2029 Convertible Notes
Debt Instrument [Line Items]
Long-Term Debt	345,000	345,000
Unamortized Debt Issuance Expense	5,300	6,300
Line of Credit - Due October 2026 \| China Merchant Bank \| Line of Credit
Debt Instrument [Line Items]
Long-Term Debt	0	0
Term Loan - Due June 2028 \| Wells Fargo Bank
Debt Instrument [Line Items]
Long-Term Debt	250,000	250,000
French Government Loan 4 - Due December 2026 \| Seine-Normandie Water Agency
Debt Instrument [Line Items]
Long-Term Debt	59	56
Revolving line of credit - closed in June 2023 \| Capital One, N.A. \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-Term Debt	$ 24,966	$ 24,649

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

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