SUMMARY OF SIGNIFICANT ACCOUNTING AND FINANCIAL REPORTING POLICIES: (Details Textual)	12 Months Ended
	Apr. 30, 2015
Accounting Policies [Line Items]
Property, Plant and Equipment, Depreciation Methods	Depreciation and amortization of property, plant and equipment are provided principally by the straight-line method at various rates calculated to amortize the book values of the respective assets over their estimated useful lives, which generally are 10 years or less for furniture and fixtures (including equipment) and 25 to 40 years for buildings and improvements.