Segment Information (Capital Expenditures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Capital expenditures	$ 184,042	$ 104,987	$ 137,253
Digital Commerce Solutions | Global Ecommerce
Segment Reporting Information [Line Items]
Capital expenditures	89,488	46,427	53,374
Digital Commerce Solutions | Presort Services
Segment Reporting Information [Line Items]
Capital expenditures	36,628	15,795	27,394
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	31,898	13,942	24,209
Operating Segments
Segment Reporting Information [Line Items]
Capital expenditures	152,144	91,045	113,044
Operating Segments | SendTech Solutions
Segment Reporting Information [Line Items]
Capital expenditures	$ 26,028	$ 28,823	$ 32,276