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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 3)
 12 Months Ended
Mar. 31, 2015
Incentive stock option | Minimum  
Share-based compensation plans  
Exercise price as a percentage of the per-share market value of the Company's shares at the date of grant 100.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
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= acxm_IncentiveStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Incentive stock option | Maximum  
Share-based compensation plans  
Duration of stock options granted 10 years
Nonqualified options | Maximum  
Share-based compensation plans  
Duration of stock options granted 10 years