EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data	3 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Basic earnings per share:
Net earnings	$ 10,015	$ 9,436
Denominator - weighted-average shares outstanding (in shares)	80,942,000	79,741,000
Basic earnings per share (in dollars per share)	$ 0.12	$ 0.12
Diluted earnings per share:
Net earnings	10,015	9,436
Denominator:
Weighted-average shares outstanding (in shares)	80,942,000	79,741,000
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)	1,072,000	1,715,000
Denominator - diluted weighted-average shares outstanding (in shares)	82,014,000	81,456,000
Diluted earnings per share (in dollars per share)	$ 0.12	$ 0.12
Basic earnings per share attributable to Acxiom stockholders:
Numerator - net earnings	10,975	9,805
Denominator - weighted-average shares outstanding (in shares)	80,942,000	79,741,000
Basic earnings per share attributable to Acxiom stockholders (in dollars per share)	$ 0.14	$ 0.12
Diluted earnings per share attributable to Acxiom stockholders:
Numerator - net earnings	$ 10,975	$ 9,805
Denominator:
Weighted-average shares outstanding (in shares)	80,942,000	79,741,000
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)	1,072,000	1,715,000
Denominator - diluted weighted-average shares outstanding (in shares)	82,014,000	81,456,000
Diluted earnings per share attributable to Acxiom stockholders (in dollars per share)	$ 0.13	$ 0.12
Stockholders' Equity
Outstanding options and warrants for the purchase of common stock (in shares)	10,600,000
Outstanding restricted stock units for purchase of common stock (in shares)	1,600,000
Number of shares outstanding under options, warrants and restricted stock units (in shares)	9,063,000	5,824,000
Range of exercise prices for options and warrants, low end of range (in dollars per share)	$ 13.70	$ 17.76
Range of exercise prices for options and warrants, high end of range (in dollars per share)	$ 62.06	$ 75.55

The amount of net income or loss attributable to parent for the period per each share of common stock outstanding during the reporting period.

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Aggregate number of common shares reserved for the future issuance on the basis of options and warrants outstanding as of the balance sheet date.

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Aggregate number of common shares reserved for the future issuance on the basis of restricted stock units outstanding as of the balance sheet date.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.

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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The sum of dilutive potential common shares used in the calculation of the diluted per-share computation.

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The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period.

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Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.

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