Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Intangible assets
Total Gross Intangible Assets	$ 508,969	$ 508,969
Accumulated Amortization and Impairment	480,073	475,064
Total Net Intangible Assets	28,896	33,905
Technology
Intangible assets
Gross Carrying Amount, Definite-lived intangible assets	327,908	327,908
Accumulated Amortization and Impairment, Definite-lived intangible assets	313,735	310,551
Total definite-lived intangible assets	14,173	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	134,192	132,970
Total definite-lived intangible assets	12,273	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	28,460	27,857
Total definite-lived intangible assets	2,450	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