RETIREMENT PLANS (Tables)

12 Months Ended

Apr. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Multiemployer Plans

Information on the significant multiemployer pension plan in which the Company participates is included in the table below.

					Expiration
		Pension		FIP/RP	of
	Federal	Certified Zone		Status Pending	Collective	Company's
	Identification	Status		or	Bargaining	Contributions
Pension Plan Legal name	Number	2016	2015	Implemented	Arrangement	2017		2016
International Brotherhood of Electrical Workers District No. 9 Pension Plan	93-6074829	Green	Green	No	11/30/2017	$	525,523	$	366,923