SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details) (USD $)	12 Months Ended				3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended							12 Months Ended
	Mar. 31, 2012 Y	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2012 Brazil operation	Mar. 31, 2012 International operations	Mar. 31, 2011 International operations	Mar. 31, 2011 International operations	Dec. 31, 2011 Middle East operations	Mar. 31, 2011 Middle East operations	Mar. 31, 2011 Middle East operations	Mar. 31, 2012 Buildings and improvements Y	Mar. 31, 2012 Data processing equipment Y	Mar. 31, 2012 Office furniture and other equipment Y	Mar. 31, 2012 Internally developed software Y	Mar. 31, 2012 Purchased software licenses Y	Mar. 31, 2012 Minimum Y	Mar. 31, 2012 Maximum M Y
Description of Business
Number of years of experience of data management	40
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%
Cash and Cash Equivalents
Term of original maturity to classify highly liquid investments as cash equivalents (in months)																	3
Accounts Receivable
Unbilled amounts included in accounts receivable	$ 19,800,000	$ 24,800,000
Property and equipment and software
Estimated useful lives, minimum (in years)											2	2	3	2
Estimated useful lives, maximum (in years)											30	5	7	5	10
Goodwill
Impairment charge	13,599,000	77,324,000		13,800,000			77,300,000	4,800,000	4,800,000	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	2,400,000	2,400,000
Deferred Costs and Data Acquisition Costs
Estimated useful life of data (in years)																2	7
Advertising Expense
Advertising expense	$ 4,500,000	$ 7,600,000	$ 8,100,000