Interest rate swap contracts (Details)) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014	Oct. 31, 2014
Interest rate swap contract assets	$ 145,000	$ 837,000	$ 145,000	$ 837,000	$ 515,000
Unrealized Gain (Loss) on Derivatives	415,000	$ (132,000)	(926,000)	(143,000)	$ (465,000)
Interest rate swap contract liabilities	556,000		556,000
Construction Loan [Member]
Refinanced loan amount				$ 15,000,000
Loan amount	25,000,000		25,000,000		$ 25,000,000
Amount drawn on loan	19,000,000		19,000,000
Notional amount of interest rate swap	$ 19,100,000		$ 19,100,000
Fixed interest rate	3.81%		3.81%
Mortgage Loans over $1,000,000 [Member]
Loan amount	$ 16,200,000		$ 16,200,000
Notional amount of interest rate swap	$ 16,200,000		$ 16,200,000
Fixed interest rate	3.75%		3.75%
Basis points, interest rate			1.25%