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SHARE BASED COMPENSATION (Details) - USD ($)
3 Months Ended
Jul. 31, 2015
Jul. 31, 2014
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares (in shares) 107,536  
Awards vested during period (in shares) 0 0
Weighted average grant date fair value (in dollars per share) $ 7.17  
Unrecognized compensation cost related to non-vested share awards $ 289,000  
Trustee Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 66,000 $ 1,100,000
2008 Incentive Award Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares (in shares) 2,000,000  
Term of award 10 years