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Intangible Assets and Liabilities Gross Carrying Amount and Accumulated Amortization (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Intangible Assets [Line Items]        
Intangible assets, Accumulated (Amortization) Accretion $ (810,963) $ (835,893)    
Intangible assets, Net 70,346      
Intangible assets, Gross 881,309 928,422 $ 978,928 $ 1,000,037
Intangible assets, Net 70,346 92,529    
Intangible liabilities, Gross (23,900) (23,900) $ (23,900) $ (23,900)
Intangible liabilities, Accumulated (Amortization) Accretion 23,785 23,441    
Intangible liabilities, Net (115) (459)    
Core-developed technology [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 491,898 505,429    
Intangible assets, Accumulated (Amortization) Accretion (484,225) (491,047)    
Intangible assets, Net 7,673 14,382    
Customer contracts and relationships [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 307,838 336,421    
Intangible assets, Accumulated (Amortization) Accretion (247,555) (261,043)    
Intangible assets, Net 60,283 75,378    
Trademarks and trade names [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 69,562 74,551    
Intangible assets, Accumulated (Amortization) Accretion (67,416) (72,133)    
Intangible assets, Net 2,146 2,418    
Other Intangible Assets [Member]        
Intangible Assets [Line Items]        
Intangible assets, Gross 12,011 12,021    
Intangible assets, Accumulated (Amortization) Accretion (11,767) (11,670)    
Intangible assets, Net $ 244 $ 351