FAIR VALUE MEASUREMENTS (Details) - Recurring [Member] - USD ($) $ in Thousands	Apr. 30, 2015	Apr. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit	$ 1,510	$ 1,757
Long term debt and capital lease obligations	9,282	10,728
Liabilities, fair value disclosure	10,792	12,485
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit	0	0
Long term debt and capital lease obligations	0	0
Liabilities, fair value disclosure	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit	0	0
Long term debt and capital lease obligations	0	0
Liabilities, fair value disclosure	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit	1,510	1,757
Long term debt and capital lease obligations	9,282	10,728
Liabilities, fair value disclosure	$ 10,792	$ 12,485