Business segment information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($) segment
Business segment information [Line Items]
Number of reportable business segments | segment			4	4
Revenue	$ 562,953	$ 478,216	$ 1,118,968	$ 919,481
Depreciation and amortization	(45,047)	(33,244)	(86,644)	(61,024)
Interest expense	(21,349)	(9,530)	(41,672)	(14,054)
Net income attributable to non-controlling interest	35	29	71	62
Restructuring integration and other costs	(15,208)	(11,979)	(31,511)	(27,191)
Share-based compensation expense	(4,896)	(7,625)	(13,038)	(14,367)
Acquisition transaction costs	(12)	(15,843)	(61)	(18,608)
Certain legal-related expense	(162)	(302)	(845)	(302)
Gain on sale of businesses and facility	17,527	0	17,527	0
Income before income taxes	32,625	18,968	45,183	52,483
Reportable business segments [Member]
Business segment information [Line Items]
Revenue	562,953	478,216	1,118,968	919,481
Adjusted EBITDA	149,655	141,609	303,157	278,395
Reportable business segments [Member] | Payments [Member]
Business segment information [Line Items]
Revenue	171,154	103,339	337,362	182,777
Adjusted EBITDA	34,986	21,199	71,421	39,528
Reportable business segments [Member] | Cloud Solutions [Member]
Business segment information [Line Items]
Revenue	68,587	68,067	138,084	130,287
Adjusted EBITDA	17,509	18,803	34,836	36,011
Reportable business segments [Member] | Promotional Solutions [Member]
Business segment information [Line Items]
Revenue	139,276	134,987	272,519	259,494
Adjusted EBITDA	14,596	21,416	31,540	39,131
Reportable business segments [Member] | Checks [Member]
Business segment information [Line Items]
Revenue	183,936	171,823	371,003	346,923
Adjusted EBITDA	82,564	80,191	165,360	163,725
Corporate [Member]
Business segment information [Line Items]
Adjusted EBITDA	$ (47,918)	$ (44,147)	$ (101,801)	$ (90,428)