SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details) (USD $)	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			12 Months Ended				12 Months Ended
	Jun. 30, 2012	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2013 Europe Marketing and Data Services	Mar. 31, 2012 Brazil operation	Mar. 31, 2011 International operations	Mar. 31, 2011 International operations	Mar. 31, 2011 Middle East operations	Mar. 31, 2011 Middle East operations	Mar. 31, 2013 Purchased software licenses	Mar. 31, 2013 Minimum	Mar. 31, 2013 Minimum Data processing equipment	Mar. 31, 2013 Minimum Office furniture and other equipment	Mar. 31, 2013 Minimum Internally developed software	Mar. 31, 2013 Maximum	Mar. 31, 2013 Maximum Buildings and improvements	Mar. 31, 2013 Maximum Data processing equipment	Mar. 31, 2013 Maximum Office furniture and other equipment	Mar. 31, 2013 Maximum Internally developed software
Description of Business
Number of years of experience of data management		40 years
Basis of Presentation and Principles of Consolidation
Investment in owned entities to be accounted using the equity method (as a percent)												20.00%				50.00%
Investments in owned entities to be accounted for at cost (as a percent)																20.00%
Accounts Receivable
Unbilled amounts included in accounts receivable		$ 20,000,000	$ 19,800,000
Property and equipment and software
Estimated useful lives											10 years		2 years	3 years	2 years		30 years	5 years	7 years	5 years
Goodwill
Impairment charge	0	0	(13,599,000)		0	13,800,000	77,300,000	77,300,000	4,800,000
Impairment of Long-lived Assets and Long-lived Assets to Be Disposed Of
Impairment charges for intangible assets						4,000,000	2,400,000		2,400,000	2,400,000
Deferred Costs and Data Acquisition Costs
Estimated useful life of data												2 years				7 years
Advertising Expense
Advertising expense		$ 5,300,000	$ 4,500,000	$ 7,600,000