RESTRUCTURING CHARGES (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Restructuring reserve [Roll forward]
Accrual, beginning of period		$ 128,000	$ 473,000	$ 2,810,000
Restructuring charge		16,573,000
Payments		(1,826,000)	(345,000)	(2,337,000)
Non-cash charges		(7,408,000)
Accrual, end of period	7,467,000	7,467,000	128,000	473,000
Total number of positions expected to be eliminated as a result of restructuring activities		190
Number of positions eliminated as a percentage of the total workforce (in hundredths)		5.00%
Number of offices expected to be fully or partially closed		16
Reductions in global workforce		111
Restructuring and Related Activities, Completion Date		Dec. 31, 2013
Restructuring accrual current	6,100,000	6,100,000
Restructuring accrual noncurrent	1,400,000	1,400,000
Employee Termination Benefits [Member]
Restructuring reserve [Roll forward]
Accrual, beginning of period		0	0	1,810,000
Restructuring charge		10,940,000
Payments		(1,698,000)	0	(1,810,000)
Non-cash charges		(4,572,000)
Accrual, end of period	4,670,000	4,670,000	0	0
Restructuring and Related Cost, Expected Cost Remaining	4,300,000	4,300,000
Employee Termination Benefits [Member] | Application Performance Management [Member]
Restructuring reserve [Roll forward]
Restructuring charge		2,657,000
Employee Termination Benefits [Member] | Mainframe [Member]
Restructuring reserve [Roll forward]
Restructuring charge		5,647,000
Employee Termination Benefits [Member] | Changepoint [Member]
Restructuring reserve [Roll forward]
Restructuring charge		367,000
Employee Termination Benefits [Member] | Uniface [Member]
Restructuring reserve [Roll forward]
Restructuring charge		40,000
Employee Termination Benefits [Member] | Professional Services [Member]
Restructuring reserve [Roll forward]
Restructuring charge		415,000
Employee Termination Benefits [Member] | Unallocated Expense [Member]
Restructuring reserve [Roll forward]
Restructuring charge		1,814,000
Lease Abandonment Costs [Member]
Restructuring reserve [Roll forward]
Accrual, beginning of period		128,000	473,000	978,000
Restructuring charge		2,712,000
Payments		(128,000)	(345,000)	(505,000)
Non-cash charges		5,000
Accrual, end of period	2,717,000	2,717,000	128,000	473,000
Restructuring and Related Cost, Expected Cost Remaining	4,100,000	4,100,000
Other Restructuring Charges [Member]
Restructuring reserve [Roll forward]
Accrual, beginning of period		0	0	22,000
Restructuring charge		2,921,000
Payments		0	0	(22,000)
Non-cash charges		(2,841,000)
Accrual, end of period	$ 80,000	$ 80,000	$ 0	$ 0