Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings per share - basic:
Net income	$ 22,097	$ 12,129	$ 31,776	$ 36,453
Net income attributable to non-controlling interest	(35)	(29)	(71)	(62)
Net income attributable to Deluxe	22,062	12,100	31,705	36,391
Income allocated to participating securities	(16)	(10)	(23)	(27)
Income attributable to Deluxe available to common shareholders	$ 22,046	$ 12,090	$ 31,682	$ 36,364
Weighted-average shares outstanding	43,016	42,275	42,907	42,169
Earnings per share - basic	$ 0.51	$ 0.29	$ 0.74	$ 0.86
Earnings per share - diluted:
Net income	$ 22,097	$ 12,129	$ 31,776	$ 36,453
Net income attributable to non-controlling interest	(35)	(29)	(71)	(62)
Net income attributable to Deluxe	22,062	12,100	31,705	36,391
Income allocated to participating securities	(16)	(10)	(23)	(9)
Re-measurement of share-based awards classified as liabilities	(307)	0	(345)	0
Income attributable to Deluxe available to common shareholders	$ 21,739	$ 12,090	$ 31,337	$ 36,382
Weighted-average shares outstanding	43,016	42,275	42,907	42,169
Dilutive impact of potential common shares	269	444	349	451
Weighted-average shares and potential common shares outstanding	43,285	42,719	43,256	42,620
Earnings per share - diluted	$ 0.50	$ 0.28	$ 0.72	$ 0.85
Antidilutive options excluded from calculation	1,891	1,530	1,891	1,530