Annual report pursuant to Section 13 and 15(d)

RETIREMENT PLANS (Details Textual)

v3.2.0.727
RETIREMENT PLANS (Details Textual)
Apr. 30, 2015
Maximum [Member]  
Multiemployer Plans [Line Items]  
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Contributions 5.00%