NOTES PAYABLE: (Details Textual)	12 Months Ended
	Apr. 30, 2015 USD ($) a	Apr. 30, 2014 USD ($)	Apr. 10, 2015 USD ($)	Feb. 09, 2015 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 2,447,000
Other Notes Payable, Current	$ 128,000
Debt Instrument, Interest Rate During Period	8.50%
Debt Instrument, Maturity Date	Dec. 01, 2017
Book Value Of Real Estate Property Collateralized	$ 63,786,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	128,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	136,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	17,826,000
Long-term Debt, Gross	$ 14,003,000
Area of Land | a	12,000
Percentage Of Proceeds To Be Applied For Loan Payment	25.00%
Initial Prepaid Amount Percentage Description	initially 5% of the amount prepaid, with the percentage declining by 1% each year
Line Of Credit Facility Capacity Available For Accounts Receivables	$ 5,000,000
Interest Expense, Total	1,615,000	$ 1,721,000
PNC Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 5,000,000	$ 7,500,000
PNC Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 7,500,000	$ 15,000,000
AMREP Southwest [Member]
Debt Instrument [Line Items]
Interest Expense, Total	$ 1,258,000	$ 1,348,000
Line of Credit [Member] | Media Services Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum	5.00%
Line of Credit [Member] | Media Services Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Debt Instrument Eurodollar Fixed Interest Rate	2.75%
Line of Credit [Member] | Media Services Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Debt Instrument Eurodollar Fixed Interest Rate	3.00%
Line of Credit [Member] | PNC Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Description	The borrowers’ obligations under the PNC Credit Facility are secured by substantially all of their assets other than real property. The revolving loans under the PNC Credit Facility may be fluctuating rate borrowings or Eurodollar fixed rate based borrowings or a combination of the two as the borrowers may select. Fluctuating rate borrowings bear interest at a rate which is, at the borrowers’ option, either (i) the reserve adjusted daily published rate for one month LIBOR loans plus a margin of 3% or (ii) the highest of two daily published market rates and the bank lender’s base commercial lending rate in effect from time to time, but in any case not less than 3% plus a margin of 2% (that is, not less than 5%). Eurodollar fixed rate based borrowings may be for one, two or six months and bear interest at the reserve adjusted Eurodollar interest rates for borrowings of such durations, plus a margin of 3%, which may be reduced to 2.75% depending on the borrowers’ financial condition.
Line of Credit [Member] | AMREP Southwest [Member]
Debt Instrument [Line Items]
Line Of Credit Facility Participation Percentage Purchased	20.00%
Area of Land | a	12,000
Cash Reserve For Interest Payments	$ 500,000
Promissory Note [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.35%
Debt Instrument, Face Amount	$ 4,087,000