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Fair Value Measurements Narrative (Details) (USD $)
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Jan. 31, 2015
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Oct. 31, 2014
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Jul. 31, 2014
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|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | |||
| Business Acquisition, Contingent receivable for proceeds of land sale | $ 0 | $ 114,500 | $ 255,000 |
| Business Acquisition, Amount of contingency settlement | 116,000 | ||
| Notes Payable, Fair Value | $ 20,039,000 | $ 23,940,000 |