Segment Information (Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 793,170	$ 776,481	$ 1,623,679	$ 1,611,019
SendTech Solutions
Segment Reporting Information [Line Items]
Total from contracts with customers	320,155	328,325	647,592	663,320
Total revenue	320,155	328,325	647,592	663,320
Presort Services
Segment Reporting Information [Line Items]
Total from contracts with customers	146,858	143,107	316,665	302,009
Total revenue	146,858	143,107	316,665	302,009
Global Ecommerce
Segment Reporting Information [Line Items]
Total from contracts with customers	326,157	305,049	659,422	645,690
Total revenue	$ 326,157	$ 305,049	$ 659,422	$ 645,690