SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:(Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Basic earnings per share:
Net earnings from continuing operations	$ (29,223)	$ 15,067	$ 9,864	$ 13,095	$ 13,099	$ 14,449	$ 16,372	$ 13,199	$ 8,803	$ 57,119	$ 37,617
Net earnings from discontinued operations											33,899
Net earnings									8,803	57,119	71,516
Net loss attributable to noncontrolling interest									(60)	(488)	(5,747)
Net earnings attributable to Acxiom	$ (29,223)	$ 15,067	$ 9,839	$ 13,180	$ 13,238	$ 14,525	$ 16,511	$ 13,333	$ 8,863	$ 57,607	$ 77,263
Basic weighted-average shares outstanding									74,690	74,814	79,483
Net earnings from continuing operations (in dollars per share)									$ 0.12	$ 0.76	$ 0.47
Net earnings from discontinued operations (in dollars per share)									$ 0.00	$ 0.00	$ 0.43
Net earnings (in dollars per share)	$ (0.38)	$ 0.20	$ 0.13	$ 0.18	$ 0.18	$ 0.19	$ 0.22	$ 0.17	$ 0.12	$ 0.76	$ 0.90
Net loss attributable to noncontrolling interest (in dollars per share)									$ 0.00	$ (0.01)	$ (0.07)
Net earnings attributable to Acxiom (in dollars per share)	$ (0.38)	$ 0.20	$ 0.13	$ 0.18	$ 0.18	$ 0.20	$ 0.22	$ 0.17	$ 0.12	$ 0.77	$ 0.97
Diluted earnings per share:
Basic weighted-average shares outstanding									74,690	74,814	79,483
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)									2,264	1,683	911
Diluted weighted-average shares outstanding									76,954	76,497	80,394
From continuing operations (in dollars per share)									$ 0.11	$ 0.75	$ 0.47
From discontinued operations (in dollars per share)									$ 0.00	$ 0.00	$ 0.42
Net earnings (in dollars per share)	$ (0.38)	$ 0.19	$ 0.13	$ 0.17	$ 0.17	$ 0.19	$ 0.21	$ 0.17	$ 0.11	$ 0.75	$ 0.89
Net loss attributable to noncontrolling interest (in dollars per share)									$ 0.00	$ (0.01)	$ (0.07)
Net earnings attributable to Acxiom (in dollars per share)	$ (0.38)	$ 0.19	$ 0.13	$ 0.17	$ 0.18	$ 0.19	$ 0.21	$ 0.17	$ 0.12	$ 0.75	$ 0.96
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units									834	6,709	9,344
Minimum
Statement
Range of exercise prices for options and warrants (in dollars per share)									$ 29.30	$ 13.10	$ 13.14
Maximum
Statement
Range of exercise prices for options and warrants (in dollars per share)									$ 62.06	$ 62.06	$ 62.06