REDEEMABLE NONCONTROLLING INTERESTS (Details) (USD $)	9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Apr. 30, 2014
Redeemable [Line Items]
Balance at April 30,			$ 6,203,000
Balance at close of period	6,340,000		6,203,000
Redeemable [Member]
Redeemable [Line Items]
Balance at April 30,	6,203,000	5,937,000
Net income	137,000	176,000
Balance at close of period	6,340,000	6,113,000
Restatement Adjustment [Member] | Noncontrolling Interests [Member]
Overstatement of equity		6,100,000
Restatement Adjustment [Member] | Equity [Member]
Overstatement of equity		$ (6,100,000)