Interest rate swap contracts (Details)) (USD $)	3 Months Ended	12 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Oct. 31, 2014
Interest rate swap contract assets		$ 1,050,000us-gaap_DerivativeAssets	$ 515,000us-gaap_DerivativeAssets
Unrealized Gain (Loss) on Derivatives	(2,149,000)us-gaap_UnrealizedGainLossOnDerivatives	70,000us-gaap_UnrealizedGainLossOnDerivatives	(465,000)us-gaap_UnrealizedGainLossOnDerivatives
Interest rate swap contract liabilities	1,634,000us-gaap_DerivativeLiabilities
Construction Loan [Member]
Refinanced loan amount		15,000,000
Loan amount			25,000,000
Amount drawn on loan	19,200,000
Notional amount of interest rate swap	19,263,000
Fixed interest rate	3.81%
Mortgage Loans over $1,000,000 [Member]
Loan amount	16,200,000
Notional amount of interest rate swap	$ 16,200,000
Fixed interest rate	3.75%
Basis points, interest rate	1.25%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Face (par) amount of debt instrument at time of issuance.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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