Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Benefit from goodwill impairment			$ 3,000
Goodwill impairment	$ 220,000	$ 119,000	339,184	$ 0	$ 0
Charge (benefit) due from sale of business				(5,000)	6,000
Gain on sale of businesses, including transaction costs			0	12,205	10,201
Benefit due to resolution of tax matters					7,000
Benefit due to regulations enacted into law					5,000
Benefit from reorganization					3,000
Benefit from windfall associated with the vesting of restricted stock			(574)	(572)	505
Charges from write-off deferred tax					1,000
Net operating loss carryforwards	3,000		$ 3,000
Operating loss carryforwards, expiration period			20 years
Tax credit carry forwards	65,095		$ 65,095	66,256
Tax credit carry forward without expiration	52,000		$ 52,000
Tax credit carryforwards, expiration period			10 years
Undistributed earnings	365,000		$ 365,000
Amount of unrecognized deferred tax liability	3,000		3,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 26,000		$ 26,000	29,000	39,000
Possible change to unrecognized tax benefits	15.00%		15.00%
Income tax interest and penalties accrued	$ 4,000		$ 4,000	3,000
International Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	390,000		$ 390,000
Operating loss carryforwards, expiration period			20 years
Indefinite lived net operating loss carryforwards	138,000		$ 138,000
State Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 969,000		$ 969,000
Operating loss carryforwards, expiration period			20 years
Restricted Stock Units
Operating Loss Carryforwards [Line Items]
Benefit from windfall associated with the vesting of restricted stock					2,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Operating Loss Carryforwards [Line Items]
Charge (benefit) due from sale of business				(1,000)	$ 3,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Borderfree Cross Border Ecommerce Solutions
Operating Loss Carryforwards [Line Items]
Gain on sale of businesses, including transaction costs				5,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 2019 Sale of Business
Operating Loss Carryforwards [Line Items]
Charge (benefit) due from sale of business				$ (1,000)