Debt (Schedule Of Short-Term And Long-Term Balances Of Term Loan) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Dec. 01, 2017
Debt Instrument [Line Items]
Total loan balance	$ 316,122	$ 317,627
Less unamortized loan origination costs	(7,591)	(8,504)
Net borrowings	308,531	309,123
Less short-term loan balance	(1,590)	(1,630)
Long-term loan balance	306,941	307,493
2.45% Sparkasse Zollernalb (KFW Loan 1)
Debt Instrument [Line Items]
Total loan balance	$ 403	566
Interest rate on amounts borrowed	2.45%
1.40% Sparkasse Zollernalb (KFW Loan 2)
Debt Instrument [Line Items]
Total loan balance	$ 844	1,061
Interest rate on amounts borrowed	1.40%
Term loan balance
Debt Instrument [Line Items]
Total loan balance	$ 214,875	216,000	$ 225,000
Convertible senior notes
Debt Instrument [Line Items]
Total loan balance	$ 100,000	$ 100,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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