Business Segment Information Reconciliation of Operating Profit by Segment to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
REVENUE
License	$ 1,072	$ 569	$ 491	$ 503	$ 574	$ 603	$ 245	$ 762	$ 2,635	$ 2,184	$ 5,366
Support and service	318,635	296,896	296,905	288,216	300,359	276,100	273,242	262,630	1,200,652	1,112,331	1,042,801
Hardware	14,006	12,244	13,898	12,755	14,233	14,731	15,356	14,338	52,903	58,658	59,357
Total revenue	333,713	309,709	311,294	301,474	315,166	291,434	288,843	277,730	1,256,190	1,173,173	1,107,524
COST OF SALES
Cost of license	185	285	308	409	148	227	188	345	1,187	908	860
Cost of support and service	176,826	168,457	170,377	165,090	168,007	162,824	154,769	149,156	680,750	634,756	601,620
Cost of hardware	10,288	9,152	9,574	9,385	10,892	11,008	10,867	10,941	38,399	43,708	43,650
Total cost of sales	187,299	177,894	180,259	174,884	179,047	174,059	165,824	160,442	720,336	679,372	646,130
GROSS PROFIT	146,414	131,815	131,035	126,590	136,119	117,375	123,019	117,288	535,854	493,801	461,394
Total operating expenses	57,042	54,613	51,370	54,964	53,231	52,834	48,777	50,661	217,989	205,503	210,637
Total interest income (expense)	(271)	(636)	(309)	(209)	(263)	(178)	(138)	(149)	(1,425)	(728)	(5,697)
INCOME BEFORE INCOME TAXES	$ 89,101	$ 76,566	$ 79,356	$ 71,417	$ 82,625	$ 64,363	$ 74,104	$ 66,478	316,440	287,570	245,060
Banking Systems and Services [Member]
REVENUE
License									1,727	1,514	4,895
Support and service									922,545	853,500	794,433
Hardware									38,457	42,657	41,052
Total revenue									962,729	897,671	840,380
COST OF SALES
Cost of license									832	555	765
Cost of support and service									533,407	492,777	461,370
Cost of hardware									27,831	31,866	29,936
Total cost of sales									562,070	525,198	492,071
GROSS PROFIT									400,659	372,473	348,309
Credit Union Systems and Services [Member]
REVENUE
License									908	670	471
Support and service									278,107	258,831	248,368
Hardware									14,446	16,001	18,305
Total revenue									293,461	275,502	267,144
COST OF SALES
Cost of license									355	353	95
Cost of support and service									147,343	141,979	140,250
Cost of hardware									10,568	11,842	13,714
Total cost of sales									158,266	154,174	154,059
GROSS PROFIT									$ 135,195	$ 121,328	$ 113,085