Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net and Goodwill (Schedule of Identifiable Intangible Assets) (Details)

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Intangible Assets, Net and Goodwill (Schedule of Identifiable Intangible Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Summary of Identifiable Intangible Assets [Line Items]      
Gross carrying amount $ 37,198 $ 37,198 $ 37,198
Accumulated amortization (35,686) (34,861) (34,036)
Net carrying amount 1,512 2,337 3,162
Intangible assets not subject to amortization 79,221 79,221 97,921
Intangible Assets, Net (Excluding Goodwill), Total 80,733 81,558 101,083
Patents And Purchased Technology      
Summary of Identifiable Intangible Assets [Line Items]      
Gross carrying amount 14,198 14,198 14,198
Accumulated amortization (14,198) (14,198) (14,198)
Customer Relationships      
Summary of Identifiable Intangible Assets [Line Items]      
Gross carrying amount 23,000 23,000 23,000
Accumulated amortization $ (21,488) $ (20,663) $ (19,838)