Segment Information (Net Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Reconciliation of adjusted segment EBIT to income or loss before taxes:
Interest expense, net	$ (25,992)	$ (24,270)
Restructuring charges	(5,112)	(1,400)
Loss on debt redemption/refinancing	0	(24,646)
Income before taxes	80,474	46,732
Presort Services
Segment Reporting Information [Line Items]
Adjusted EBIT	39,178	54,779
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBIT	152,708	151,806
Operating Segments \| SendTech Solutions
Segment Reporting Information [Line Items]
Adjusted EBIT	113,530	97,027
Operating Segments \| Presort Services
Segment Reporting Information [Line Items]
Adjusted EBIT	39,178	54,779
Reconciling Items
Reconciliation of adjusted segment EBIT to income or loss before taxes:
Interest expense, net	(35,575)	(37,885)
Corporate expenses	(22,331)	(32,117)
Restructuring charges	(5,112)	(1,400)
Loss on debt redemption/refinancing	0	(24,646)
Foreign currency gain (loss) on intercompany loans	4,882	(7,595)
Pension expense of plans to be terminated	(7,554)	0
Transaction and Strategic review costs	(6,544)	(1,890)
Reconciling Items \| Ecommerce \| Discontinued Operations, Disposed of by Sale
Reconciliation of adjusted segment EBIT to income or loss before taxes:
Restructuring charges	$ 0	$ 459

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