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Debt (Schedule Of Short-Term And Long-Term Balances Of Term Loan) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021 | Dec. 01, 2017
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Total loan balance | $ 315,369 | $ 317,627 |
Less unamortized loan origination costs | (7,133) | (8,504) |
Net borrowings | 308,236 | 309,123 |
Less short-term loan balance | (1,562) | (1,630) |
Long-term loan balance | 306,674 | 307,493 |
2.45% Sparkasse Zollernalb (KFW Loan 1) |  |  |
Debt Instrument [Line Items] |  |  |
Total loan balance | $ 325 | 566 |
Interest rate on amounts borrowed | 2.45% |  |
1.40% Sparkasse Zollernalb (KFW Loan 2) |  |  |
Debt Instrument [Line Items] |  |  |
Total loan balance | $ 731 | 1,061 |
Interest rate on amounts borrowed | 1.40% |  |
Term loan balance |  |  |
Debt Instrument [Line Items] |  |  |
Total loan balance | $ 214,313 | 216,000 | $ 225,000
Convertible senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Total loan balance | $ 100,000 | $ 100,000 |

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