Property acquisition (Narrative) (Details)		3 Months Ended	12 Months Ended
	Jun. 18, 2014 USD ($) Number	Jul. 31, 2015 USD ($)	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Dec. 29, 2014 USD ($)
Business Acquisition [Line Items]
Acquisition price			$ 20,600,000
Regency acquisition costs		$ 648,000			$ 648,000
South Brunswick property [Member]
Business Acquisition [Line Items]
Deferred gain utilized in acquisition	$ 9,800,000
Regency Club Acquisition [Member]
Business Acquisition [Line Items]
Number of units acquired | Number	132
Number of buildings acquired | Number	11
Acquisition price	$ 20,625,000
Regency acquisition costs	648,000
Remaining balance in acquisition, after net proceeds from sale	11,500,000
Cash used for acquisition	10,000,000
Acquisition price allocation to buildings	18,500,000
Acquisition price allocation to land	$ 2,100,000
Estimated useful life			40 years
Mortgages [Member] | Provident Bank Mortgage [Member]
Business Acquisition [Line Items]
Loan amount						$ 16,200,000