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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Unamortized Debt Issuance Expense | $ 12,520 | $ 13,775
Equipment under Finance Leases | $ 485 | 616
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Long-term debt, net of current portion and unamortized debt issuance costs |
Total debt | $ 609,218 | 603,790
Less current portion of long-term debt and finance leases | 252 | 436
Long-term debt, net of current portion and unamortized debt issuance costs | 596,446 | 589,579
2029 Convertible Notes |  |
Debt Instrument [Line Items] |  |
Long-Term Debt | 345,000 | 345,000
Unamortized Debt Issuance Expense | 8,800 |
Line of Credit - Due October 2026 | China Merchant Bank | Line of Credit [Member] |  |
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
Mortgage Payable - Paid off June 2024 | East West Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-Term Debt |  | 8,016
French Government Loan 4 - Due December 2026 | Seine-Normandie Water Agency [Member] |  |
Debt Instrument [Line Items] |  |
Long-Term Debt | 168 | 158
Revolving line of credit - closed in June 2023 | Capital One, N.A. | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-Term Debt | $ 0 | $ 0

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