Intangible Assets and Liabilities Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Intangible Assets [Line Items]
Intangible assets, Accumulated (Amortization) Accretion	$ (856,958)	$ (840,193)
Intangible assets, Net	55,378
Intangible assets, Gross	912,336	905,134	$ 906,116	$ 928,422
Intangible assets, Net	55,378	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	500,663	498,601
Intangible assets, Accumulated (Amortization) Accretion	(496,838)	(492,782)
Intangible assets, Net	3,825	5,819
Customer contracts and relationships [Member]
Intangible Assets [Line Items]
Intangible assets, Gross	326,723	322,360
Intangible assets, Accumulated (Amortization) Accretion	(277,206)	(265,503)
Intangible assets, Net	49,517	56,857
Trademarks and trade names [Member]
Intangible Assets [Line Items]
Intangible assets, Gross	72,931	72,156
Intangible assets, Accumulated (Amortization) Accretion	(71,043)	(70,101)
Intangible assets, Net	1,888	2,055
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Intangible assets, Gross	12,019	12,017
Intangible assets, Accumulated (Amortization) Accretion	(11,871)	(11,807)
Intangible assets, Net	$ 148	$ 210