Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Income Taxes (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
Income Taxes (Details 3) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Valuation allowance
Valuation allowance, deferred tax asset, increase (decrease)		$ (149,400)	$ 149,400
Unrecognized tax benefits	$ 179,500			$ 179,500		$ 164,500
Income taxes receivable	82,700			83,423	$ (202)
Income taxes payable	(75,600)			61,736	$ (15,352)
Deferred tax assets	(7,100)			(7,100)
Divestiture, not discontinued operations \| PHY IP group
Valuation allowance
Valuation allowance, deferred tax asset, increase (decrease)	4,400			(145,100)
Foreign tax authority \| National Tax Services
Valuation allowance
Unrecognized tax benefits	152,600			152,600
Long-term deferred tax assets
Valuation allowance
Unrecognized tax benefits	27,400			27,400		19,600
Other assets \| Foreign tax authority \| National Tax Services
Valuation allowance
Unrecognized tax benefits	75,100			75,100		143,600
Long-term income taxes payable
Valuation allowance
Unrecognized tax benefits	$ 77,000			$ 77,000		$ 1,300