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Note 10 - Mortgage Notes Payable (Detail) - Mortgage Notes Payable (USD $) | Jan. 31, 2013 | Jan. 31, 2012
--- | --- | ---
Mortgage note payable | $ 19,954,924 | $ 21,271,256
Secured by Yuma Property [Member] |  |
Mortgage note payable | 5,469,475 |
Secured by Tucson Foothills Property [Member] |  |
Mortgage note payable | 1,706,278 | 2,135,796
Secured by Ontario Property [Member] |  |
Mortgage note payable | 6,323,592 | 7,405,289
Secured by Albuquerque Property [Member] |  |
Mortgage note payable | 1,227,744 | 1,321,015
Secured by Tucson St.Mary's Property [Member] |  |
Mortgage note payable | 5,227,835 | 5,409,156
First Mortgage Note Secured by Yuma Property, Satisfied in Full in 2013 [Member] |  |
Mortgage note payable |  | 4,000,000
Second Mortgage Note Secured by Yuma Property, Satisfied in Full in 2013 [Member] |  |
Mortgage note payable |  | $ 1,000,000

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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_SecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant