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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Apr. 30, 2014
Number
Concentration Risk [Line Items]  
Entity Number of Employees 108
Seattle [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 40
Seattle [Member] | Union Contract Expiration Date May 2015 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 16
Union Contract Expiration Date May 31, 2015
Seattle [Member] | Union Contract Expiration Date Aug 2015 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 1
Union Contract Expiration Date Aug. 31, 2015
Seattle [Member] | Union Contract Expiration Date Jun 2015 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 1
Union Contract Expiration Date Jun. 30, 2015
Seattle [Member] | Union Contract Expiration Date May 2016 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 13
Union Contract Expiration Date May 31, 2016
Seattle [Member] | Union Contract Expiration Date July 2015 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 9
Union Contract Expiration Date Jul. 31, 2015
Suisun City [Member] | Union Contract Expiration Date Nov 2014 [Member]
  
Concentration Risk [Line Items]  
Entity Number of Employees 68
Union Contract Expiration Date Nov. 30, 2014