BUSINESS SEGMENT INFORMATION (disaggregated revenue information) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Product and service information [Line Items]
Total revenue	$ 2,238,010	$ 2,022,197	$ 1,790,781
U. S. [Member]
Product and service information [Line Items]
Total revenue	2,120,985	1,897,388	1,678,187
Foreign, primarily Canada and Australia [Member]
Product and service information [Line Items]
Total revenue	117,025	124,809	112,594
Reportable business segments [Member] \| Payments [Member]
Product and service information [Line Items]
Total revenue	678,580	510,359	301,901
Reportable business segments [Member] \| Payments [Member] \| U. S. [Member]
Product and service information [Line Items]
Total revenue	634,945	469,102	266,920
Reportable business segments [Member] \| Payments [Member] \| Foreign, primarily Canada and Australia [Member]
Product and service information [Line Items]
Total revenue	43,635	41,257	34,981
Reportable business segments [Member] \| Data Solutions [Member]
Product and service information [Line Items]
Total revenue	267,525	262,310	252,773
Reportable business segments [Member] \| Data Solutions [Member] \| U. S. [Member]
Product and service information [Line Items]
Total revenue	248,227	227,091	220,699
Reportable business segments [Member] \| Data Solutions [Member] \| Foreign, primarily Canada and Australia [Member]
Product and service information [Line Items]
Total revenue	19,298	35,219	32,074
Reportable business segments [Member] \| Promotional Solutions [Member]
Product and service information [Line Items]
Total revenue	562,917	546,473	529,649
Reportable business segments [Member] \| Promotional Solutions [Member] \| U. S. [Member]
Product and service information [Line Items]
Total revenue	537,643	522,966	506,240
Reportable business segments [Member] \| Promotional Solutions [Member] \| Foreign, primarily Canada and Australia [Member]
Product and service information [Line Items]
Total revenue	25,274	23,507	23,409
Reportable business segments [Member] \| Checks [Member]
Product and service information [Line Items]
Total revenue	728,988	703,055	706,458
Reportable business segments [Member] \| Checks [Member] \| U. S. [Member]
Product and service information [Line Items]
Total revenue	700,170	678,229	684,328
Reportable business segments [Member] \| Checks [Member] \| Foreign, primarily Canada and Australia [Member]
Product and service information [Line Items]
Total revenue	28,818	24,826	22,130
Checks [Member]
Product and service information [Line Items]
Total revenue	728,988	703,055	706,458
Checks [Member] \| Reportable business segments [Member] \| Checks [Member]
Product and service information [Line Items]
Total revenue	728,988	703,055	706,458
Merchant services and other payment solutions [Member]
Product and service information [Line Items]
Total revenue	437,395	276,118	75,796
Merchant services and other payment solutions [Member] \| Reportable business segments [Member] \| Payments [Member]
Product and service information [Line Items]
Total revenue	437,395	276,118	75,796
Forms and other products [Member]
Product and service information [Line Items]
Total revenue	289,920	296,993	316,245
Forms and other products [Member] \| Reportable business segments [Member] \| Promotional Solutions [Member]
Product and service information [Line Items]
Total revenue	289,920	296,993	316,245
Marketing and promotional solutions [Member]
Product and service information [Line Items]
Total revenue	272,997	249,480	213,404
Marketing and promotional solutions [Member] \| Reportable business segments [Member] \| Promotional Solutions [Member]
Product and service information [Line Items]
Total revenue	272,997	249,480	213,404
Treasury management solutions [Member]
Product and service information [Line Items]
Total revenue	241,185	234,241	226,105
Treasury management solutions [Member] \| Reportable business segments [Member] \| Payments [Member]
Product and service information [Line Items]
Total revenue	241,185	234,241	226,105
Data-driven marketing solutions [Member]
Product and service information [Line Items]
Total revenue	177,598	150,772	119,155
Data-driven marketing solutions [Member] \| Reportable business segments [Member] \| Data Solutions [Member]
Product and service information [Line Items]
Total revenue	177,598	150,772	119,155
Web and hosted solutions [Member]
Product and service information [Line Items]
Total revenue	89,927	111,538	133,618
Web and hosted solutions [Member] \| Reportable business segments [Member] \| Data Solutions [Member]
Product and service information [Line Items]
Total revenue	$ 89,927	$ 111,538	$ 133,618