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Intangible Assets and Liabilities Gross Carrying Amount and Accumulated Amortization (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Intangible Assets [Line Items]        
Intangible assets, Accumulated (Amortization) Accretion $ (850,011) $ (840,193)    
Intangible assets, Net 60,052      
Intangible assets, Gross 910,063 905,134 $ 922,844 $ 928,422
Intangible assets, Net 60,052 64,941    
Intangible liabilities, Gross (23,900) (23,900) $ (23,900) $ (23,900)
Intangible liabilities, Accumulated (Amortization) Accretion 23,900 23,900    
Intangible liabilities, Net 0 0    
Core-developed technology [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 500,000 498,601    
Intangible assets, Accumulated (Amortization) Accretion (495,338) (492,782)    
Intangible assets, Net 4,662 5,819    
Customer contracts and relationships [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 325,346 322,360    
Intangible assets, Accumulated (Amortization) Accretion (272,107) (265,503)    
Intangible assets, Net 53,239 56,857    
Trademarks and trade names [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 72,699 72,156    
Intangible assets, Accumulated (Amortization) Accretion (70,727) (70,101)    
Intangible assets, Net 1,972 2,055    
Other Intangible Assets [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 12,018 12,017    
Intangible assets, Accumulated (Amortization) Accretion (11,839) (11,807)    
Intangible assets, Net $ 179 $ 210