Note 2 - Summary of Significant Accounting Policies (Detail) (USD $)	3 Months Ended		6 Months Ended		36 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011	Jan. 31, 2015	Aug. 27, 2012	Aug. 24, 2012	Feb. 14, 2012	Jan. 31, 2012
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 514,000		$ 514,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	1,100,000		1,100,000
Troubled Debt Restructuring, Debtor, Current Period, Principal Balance Reduced			500,000
Troubled Debt Restructuring, Debtor, Current Period, Exchanged Pay Down Amount			1,000,000
Debt Instrument, Interest Rate, Stated Percentage, Original	8.28%		8.28%
Debt Instrument, Interest Rate, Stated Percentage, Adjusted	5.00%		5.00%
Debt Instrument, Periodic Payment, Adjusted			31,700
Debt Instrument, Periodic Payment, Original			71,100
Troubled Debt Restructuring, Debtor, Extended Maturity Period	3 years		3 years
Troubled Debt Restructuring, Debtor, Modified Total Future Cash Payments	7,795,006		7,795,006
Troubled Debt Restructuring, Debtor, Modified Total Future Cash Payments, Principal	6,905,289		6,905,289
Troubled Debt Restructuring, Debtor, Modified Total Future Cash Payments, Interest	889,717		889,717
Notes Payable, Noncurrent	18,952,972		18,952,972				5,500,000	7,610,427	18,980,009
Interest Expense, Long-term Debt	267,946	376,566	465,915	755,628
Troubled Debt Restructuring, Debtor, Reduction in Carrying Value			1,161,000		705,138
Repayments of Long-term Debt			1,507,785	381,591
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	500,000		500,000			500,000
Proceeds from Divestiture of Interest in Joint Venture (in Dollars)			1,604,068	1,307,397
Aggregate Weighted Average Incremental Increase of Shares of Beneficial Interest Assuming Conversion (in Shares)	3,693,972	3,774,071	3,694,894	3,764,784
Scenario, Actual [Member]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	500,000		500,000
Scenario, Plan [Member]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	600,000		600,000
Ontario and Tucson Foothills Subsidiaries [Member]
Proceeds from Divestiture of Interest in Joint Venture (in Dollars)			1,600,000
Non-recourse Mortgage Note [Member]
Interest Expense, Long-term Debt			29,000		184,579
Repayments of Long-term Debt			$ 1,190,000