Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Software license fees	$ 35,710		$ 31,674	$ 71,116		$ 65,668
Maintenance fees	100,500		102,197	199,028		205,146
Subscription fees	20,651		20,231	41,436		40,710
Professional services fees	46,716		45,954	95,412		94,106
Application services fees	24,525		20,542	48,626		41,129
Total revenues	228,102		220,598	455,618		446,759
Operating expenses	206,212		203,424	421,964		413,022
Contribution /operating margin	21,890		17,174	33,654		33,737
Application Performance Management [Member]
Segment Reporting Information [Line Items]
Software license fees	24,256		17,942	46,267		40,299
Maintenance fees	24,394		22,410	48,098		43,175
Subscription fees	19,931		19,544	40,063		39,396
Professional services fees	6,796		7,184	14,398		15,379
Application services fees	0		0	0		0
Total revenues	75,377		67,080	148,826		138,249
Operating expenses	68,757		74,059	142,803		150,155
Contribution /operating margin	6,620		(6,979)	6,023		(11,906)
Mainframe [Member]
Segment Reporting Information [Line Items]
Software license fees	8,335		9,773	18,067		18,823
Maintenance fees	64,425		68,378	127,883		138,924
Subscription fees	0		0	0		0
Professional services fees	31		674	100		967
Application services fees	0		0	0		0
Total revenues	72,791		78,825	146,050		158,714
Operating expenses	17,324		20,284	36,500		43,129
Contribution /operating margin	55,467		58,541	109,550		115,585
Changepoint [Member]
Segment Reporting Information [Line Items]
Software license fees	958		2,068	3,154		2,861
Maintenance fees	4,247		4,052	8,374		8,182
Subscription fees	720		687	1,373		1,314
Professional services fees	3,202		3,317	6,771		6,761
Application services fees	0		0	0		0
Total revenues	9,127		10,124	19,672		19,118
Operating expenses	8,827		10,752	19,141		20,441
Contribution /operating margin	300		(628)	531		(1,323)
Uniface [Member]
Segment Reporting Information [Line Items]
Software license fees	2,161		1,891	3,628		3,685
Maintenance fees	7,434		7,357	14,673		14,865
Subscription fees	0		0	0		0
Professional services fees	986		1,095	2,110		2,271
Application services fees	0		0	0		0
Total revenues	10,581		10,343	20,411		20,821
Operating expenses	4,694		4,606	9,864		10,025
Contribution /operating margin	5,887		5,737	10,547		10,796
Professional Services [Member]
Segment Reporting Information [Line Items]
Software license fees	0		0	0		0
Maintenance fees	0		0	0		0
Subscription fees	0		0	0		0
Professional services fees	36,013		33,684	72,999		68,728
Application services fees	0		0	0		0
Total revenues	36,013		33,684	72,999		68,728
Operating expenses	28,918		28,138	59,550		57,058
Contribution /operating margin	7,095		5,546	13,449		11,670
Application Services [Member]
Segment Reporting Information [Line Items]
Software license fees	0		0	0		0
Maintenance fees	0		0	0		0
Subscription fees	0		0	0		0
Professional services fees	0		0	0		0
Application services fees	24,525		20,542	48,626		41,129
Total revenues	24,525		20,542	48,626		41,129
Operating expenses	34,362		20,051	59,785		38,067
Contribution /operating margin	(9,837)		491	(11,159)		3,062
Unallocated Expense [Member]
Segment Reporting Information [Line Items]
Software license fees	0	[1]	0	0	[2]	0
Maintenance fees	0	[1]	0	0	[2]	0
Subscription fees	0	[1]	0	0	[2]	0
Professional services fees	(312)	[1]	0	(966)	[2]	0
Application services fees	0	[1]	0	0	[2]	0
Total revenues	(312)	[1]	0	(966)	[2]	0
Operating expenses	43,330	[1]	45,534	94,321	[2]	94,147
Contribution /operating margin	$ (43,642)	[1]	$ (45,534)	$ (95,287)	[2]	$ (94,147)

[1] Unallocated operating expenses include $233,000 in restructuring expenses. See note 10 for additional information.

[2] Unallocated operating expenses include $5.3 million in restructuring expenses. See note 10 for additional information.