FAIR VALUE MEASUREMENTS (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Apr. 30, 2013	Jul. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit	$ 1,757	$ 1,377
Long term debt and capital lease obligations	10,728	14,706
Liabilities, fair value disclosure	12,485	16,083
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	1,757	1,377
Long term debt and capital lease obligations	10,728	14,706
Liabilities, fair value disclosure	12,485	16,083
Level 3 [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