DISCONTINUED OPERATIONS (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Components of pretax income (loss) from discontinued operations:
Revenues	$ 2,471	$ 3,800	$ 8,505	$ 12,053
Operating expenses	(1,981)	(3,855)	(6,677)	(10,608)
General and administrative expenses	(386)	(563)	(1,456)	(1,517)
Interest expense	(1)	(22)	(27)	(73)
Gain from settlement (Note 12)			11,155axr_GainLossOnSettlement	0axr_GainLossOnSettlement
Income (loss) from discontinued operations before income taxes	103	(640)	11,500	(145)
Provision (benefit) for income taxes	70	(339)	4,216	(82)
Net income (loss) from discontinued operations	$ 33	$ (301)	$ 7,284	$ (63)

Amount of gain (loss) on settlement during the period.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of general and administrative expense attributable to disposal group.

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Amount of interest expense allocated to disposal group, including a discontinued operation.

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Amount of operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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