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Debt (Schedule of Short-Term and Long-Term Balances of Term Loan) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 01, 2017 | Jun. 30, 2015
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Total loan balance | $ 314,779 | $ 317,627 |  |
Less unamortized loan origination costs | (6,672) | (8,504) |  |
Net borrowings | 308,107 | 309,123 |  |
Less short-term loan balance, net | (1,608) | (1,630) |  |
Long-term loan balance, net | 306,499 | 307,493 |  |
2.45% Sparkasse Zollernalb (KFW Loan 1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total loan balance | $ 296 | 566 |  |
Interest rate on amounts borrowed | 2.45% |  |  | 2.45%
1.40% Sparkasse Zollernalb (KFW Loan 2) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total loan balance | $ 733 | 1,061 |  |
Interest rate on amounts borrowed | 1.40% |  |  | 1.40%
Term Loan |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total loan balance | $ 213,750 | 216,000 | $ 225,000 |
Convertible Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total loan balance | $ 100,000 | $ 100,000 |  |

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