IMPAIRMENT OF ASSETS: (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	Jul. 31, 2013	Apr. 30, 2014		Apr. 30, 2013		Apr. 30, 2012
Indefinite-lived Intangible Assets [Line Items]
Original Value Of Impaired Real Estate		$ 2,758,000		$ 4,949,000		$ 1,734,000
Fair Value Of Impaired Real Estate		2,082,000		3,466,000		1,174,000
Impairment of Real Estate		686,000		1,511,000		570,000
Asset Impairment Charges, Total	169,000	955,000		1,511,000		570,000
Newsstand Distribution Services [Member]
Indefinite-lived Intangible Assets [Line Items]
Asset Impairment Charges, Total		$ 269,000	[1]	$ 0	[1]	$ 0	[1]

[1] Pursuant to a settlement agreement with a significant customer entered into in June 2014, Newsstand Distribution Services, which is operated through Kable Distribution, significantly reduced its negative working capital. On a pro forma basis, if the settlement agreement had been in effect as of April 30, 2014, Kable Distribution estimates that its negative working capital would have been reduced by $12,077,000. For further details regarding the settlement agreement, see Note 20.