Intangible Assets and Goodwill (Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Goodwill
Beginning balance				$ 1,066,951
Impairment	$ 0		$ 0	(118,599)	$ 0
Currency impact				(2,934)
Ending balance	945,418			945,418
Global Ecommerce
Goodwill
Beginning balance				339,184
Impairment		$ (119,000)
Currency impact				0
Ending balance	220,585			220,585
Global Ecommerce | Operating Segments
Goodwill
Impairment				(118,599)
Presort Services
Goodwill
Beginning balance				223,763
Currency impact				0
Ending balance	223,763			223,763
Presort Services | Operating Segments
Goodwill
Impairment				0
SendTech Solutions
Goodwill
Beginning balance				504,004
Currency impact				(2,934)
Ending balance	$ 501,070			501,070
SendTech Solutions | Operating Segments
Goodwill
Impairment				$ 0