Business segment information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($) segment
Business segment information [Line Items]
Number of reportable business segments \| segment	4	4
Revenue	$ 441,264	$ 486,423
Depreciation and amortization	(27,780)	(28,430)
Interest expense	(4,524)	(6,999)
Net income attributable to non-controlling interest	33	0
Asset impairment charges	0	(90,330)
Restructuring integration and other costs	(15,212)	(19,633)
CEO transition costs	0	180
Share-based compensation expense	(6,742)	(3,618)
Acquisition transaction costs	(2,765)	(9)
Certain legal-related expenses	0	2,164
Income (loss) before income taxes	33,515	(63,341)
Reportable business segments [Member]
Business segment information [Line Items]
Revenue	441,264	486,423
Adjusted EBITDA	136,786	134,852
Reportable business segments [Member] \| Payments [Member]
Business segment information [Line Items]
Revenue	79,438	77,040
Adjusted EBITDA	18,329	18,023
Reportable business segments [Member] \| Cloud Solutions [Member]
Business segment information [Line Items]
Revenue	62,220	75,945
Adjusted EBITDA	17,209	14,920
Reportable business segments [Member] \| Promotional Solutions [Member]
Business segment information [Line Items]
Revenue	124,507	142,794
Adjusted EBITDA	17,714	11,197
Reportable business segments [Member] \| Checks [Member]
Business segment information [Line Items]
Revenue	175,099	190,644
Adjusted EBITDA	83,534	90,712
Corporate [Member]
Business segment information [Line Items]
Adjusted EBITDA	$ (46,281)	$ (51,518)

Adjusted EBITDA reported as the entity's measure of segment profitability.

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