Segment Information (Depreciation and Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 162,859	$ 160,625	$ 159,142
Digital Commerce Solutions | Global Ecommerce
Segment Reporting Information [Line Items]
Depreciation and amortization	79,128	69,676	68,385
Digital Commerce Solutions | Presort Services
Segment Reporting Information [Line Items]
Depreciation and amortization	27,243	31,769	29,440
Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization	26,538	24,864	21,559
Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	136,321	135,761	137,583
Operating Segments | SendTech Solutions
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 29,950	$ 34,316	$ 39,758