Business Segment Information Reconciliation of Operating Profit by Segment to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
REVENUE
License	$ 511	$ 292	$ 634	$ 1,604	$ 1,072	$ 569	$ 491	$ 503	$ 3,041	$ 2,635	$ 2,184
Support and service	353,364	319,649	320,219	307,746	318,635	296,896	296,905	288,216	1,300,978	1,200,652	1,112,331
Hardware	13,095	13,245	12,019	12,268	14,006	12,244	13,898	12,755	50,627	52,903	58,658
Total revenue	366,970	333,186	332,872	321,618	333,713	309,709	311,294	301,474	1,354,646	1,256,190	1,173,173
COST OF SALES
Cost of license	325	193	498	181	185	285	308	409	1,197	1,187	908
Cost of support and service	195,878	184,527	181,989	174,714	176,826	168,457	170,377	165,090	737,108	680,750	634,756
Cost of hardware	9,067	9,553	7,958	8,768	10,288	9,152	9,574	9,385	35,346	38,399	43,708
Total cost of sales	205,270	194,273	190,445	183,663	187,299	177,894	180,259	174,884	773,651	720,336	679,372
GROSS PROFIT	161,700	138,913	142,427	137,955	146,414	131,815	131,035	126,590	580,995	535,854	493,801
Total operating expenses	45,195	59,083	57,640	57,418	57,042	54,613	51,370	54,964	219,336	217,989	205,503
Total interest income (expense)	(399)	(432)	(185)	(107)	(271)	(636)	(309)	(209)	(1,123)	(1,425)	(728)
INCOME BEFORE INCOME TAXES	$ 116,106	$ 79,398	$ 84,602	$ 80,430	$ 89,101	$ 76,566	$ 79,356	$ 71,417	360,536	316,440	287,570
Banking Systems and Services [Member]
REVENUE
License									2,536	1,727	1,514
Support and service									960,738	922,545	853,500
Hardware									33,394	38,457	42,657
Total revenue									996,668	962,729	897,671
COST OF SALES
Cost of license									1,058	832	555
Cost of support and service									564,851	533,407	492,777
Cost of hardware									23,159	27,831	31,866
Total cost of sales									589,068	562,070	525,198
GROSS PROFIT									407,600	400,659	372,473
Credit Union Systems and Services [Member]
REVENUE
License									505	908	670
Support and service									340,240	278,107	258,831
Hardware									17,233	14,446	16,001
Total revenue									357,978	293,461	275,502
COST OF SALES
Cost of license									139	355	353
Cost of support and service									172,257	147,343	141,979
Cost of hardware									12,187	10,568	11,842
Total cost of sales									184,583	158,266	154,174
GROSS PROFIT									$ 173,395	$ 135,195	$ 121,328