Segment Information (Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 459,675	$ 499,463	$ 1,415,004	$ 1,510,477
Operating Segments
Segment Reporting Information [Line Items]
Total from contracts with customers	459,675	497,743	1,415,004	1,500,502
Other
Segment Reporting Information [Line Items]
Total from contracts with customers	0	1,720	0	9,975
Total revenue		1,720		9,975
SendTech Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total from contracts with customers	310,782	331,376	938,104	1,017,470
Total revenue	310,782	331,376	938,104	1,017,470
Presort Services | Operating Segments
Segment Reporting Information [Line Items]
Total from contracts with customers	148,893	166,367	476,900	483,032
Total revenue	$ 148,893	$ 166,367	$ 476,900	$ 483,032