Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Intangible assets
Total Gross Intangible Assets	$ 508,969	$ 508,969
Accumulated Amortization and Impairment	482,578	475,064
Total Net Intangible Assets	26,391	33,905
Technology
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets	327,908	327,908
Accumulated Amortization and Impairment, Definite-lived intangible assets	315,327	310,551
Total definite-lived intangible assets	12,581	17,357
Customer relationship
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets	146,465	146,465
Accumulated Amortization and Impairment, Definite-lived intangible assets	134,803	132,970
Total definite-lived intangible assets	11,662	13,495
Trademarks and tradenames
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets	30,910	30,910
Accumulated Amortization and Impairment, Definite-lived intangible assets	28,762	27,857
Total definite-lived intangible assets	2,148	3,053
Other Intangible Assets
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets	3,686	3,686
Accumulated Amortization and Impairment, Definite-lived intangible assets	$ 3,686	$ 3,686