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Note 10 - Mortgage Notes Payable (Detail) (USD $) |  |  |  | 12 Months Ended | 0 Months Ended | 12 Months Ended |  | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2011 | Jan. 31, 2013 Secured by Tucson St.Mary's Property [Member] | Feb. 14, 2012 Secured by Ontario Property [Member] | Jan. 31, 2012 Secured by Ontario Property [Member] | May 11, 2011 Secured by Ontario Property [Member] | Jan. 31, 2013 Secured by Ontario Property [Member] | Jan. 31, 2012 Secured by Ontario Property [Member] | Jan. 31, 2011 Secured by Ontario Property [Member] | Aug. 24, 2012 Secured by Yuma Property [Member] | Jan. 31, 2013 Secured by Yuma Property [Member] | Jan. 31, 2013 Weighted Average [Member] | Jan. 31, 2012 Weighted Average [Member]
Mortgage Loans on Real Estate, Interest Rate |  |  |  |  |  |  |  | 5.00% |  |  |  | 5.00% | 4.97% | 6.70%
Guarantor Obligations, Percent |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Debt Instrument, Decrease, Forgiveness |  |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |
Repayments of Debt |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 3.25% | 5.00% | 5.00% |  | 5.00% | 5.00% | 8.28% | 5.00% | 5.00% |  |
Debt Instrument, Periodic Payment |  |  |  | 29,776 |  | 31,700 | 71,100 | 31,701 | 31,701 |  | 32,419 | 32,419 |  |
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 |  |  |  |  |
Mortgage Loans on Real Estate | 19,954,924 | 21,271,256 | 22,080,716 |  |  | 7,646,030 |  |  | 7,646,030 |  |  |  |  |
Difference Between Carrying Value of Note Payable and Future Cash Payments |  |  |  |  |  | 148,976 |  |  | 148,976 |  |  |  |  |
Interest Expense Recognized Over Remainder of Debt Term |  |  |  |  |  | 148,976 |  |  | 148,976 |  |  |  |  |
Notes Payable (in Dollars) |  |  |  |  |  |  |  |  |  |  | 5,500,000 |  |  |
Increase in Monthly Installments |  |  |  |  |  |  |  |  |  |  | 2,419 |  |  |
Previous Monthly Interest-Only Installments |  |  |  |  |  |  |  |  |  |  | $ 30,000 |  |  |

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