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Business segment information (disaggregated revenue information) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024		Sep. 30, 2025		Sep. 30, 2024
Disaggregated revenue information
Revenue	$ 540,247	$ 528,444		$ 1,597,980		$ 1,601,215
Operating segments [Member]
Disaggregated revenue information
Revenue	540,247	528,444		1,597,980		1,601,215
Merchant Services [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	98,000	93,531		297,173		288,536
B2B Payments [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	73,078	75,140		214,215		214,788
Data Solutions [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	89,224	61,065		234,280		178,169
Print [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	279,945	297,313		852,296		909,393
All Other [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	0	1,395	[1]	16	[1]	10,329	[1]
Checks [Member]
Disaggregated revenue information
Revenue	173,053	176,827		521,936		534,672
Checks [Member] | Print [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	173,053	176,827		521,936		534,672
Merchant services [Member]
Disaggregated revenue information
Revenue	98,000	93,531		297,173		288,536
Merchant services [Member] | Merchant Services [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	98,000	93,531		297,173		288,536
Data-driven marketing [Member]
Disaggregated revenue information
Revenue	84,656	56,520		219,637		163,339
Data-driven marketing [Member] | Data Solutions [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	84,656	56,520		219,637		163,339
Forms and other business products [Member]
Disaggregated revenue information
Revenue	54,586	59,222		169,294		181,378
Forms and other business products [Member] | Print [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	54,586	59,222		169,294		181,378
Promotional solutions [Member]
Disaggregated revenue information
Revenue	52,306	61,264		161,066		193,343
Promotional solutions [Member] | Print [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	52,306	61,264		161,066		193,343
Treasury management solutions [Member]
Disaggregated revenue information
Revenue	56,124	58,574		164,921		169,000
Treasury management solutions [Member] | B2B Payments [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	56,124	58,574		164,921		169,000
Other payment solutions [Member]
Disaggregated revenue information
Revenue	16,954	16,566		49,294		45,788
Other payment solutions [Member] | B2B Payments [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	16,954	16,566		49,294		45,788
Other web based solutions [Member]
Disaggregated revenue information
Revenue	4,568	4,545		14,643		14,830
Other web based solutions [Member] | Data Solutions [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue	$ 4,568	4,545		14,643		14,830
Other [Member]
Disaggregated revenue information
Revenue		1,395		16		10,329
Other [Member] | All Other [Member] | Operating segments [Member]
Disaggregated revenue information
Revenue		$ 1,395		$ 16		$ 10,329
[1] Includes the payroll and human resources services business, which we substantially exited during 2024 (Note 6)

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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