Credit Facility, Senior Notes and Mortgage Company Loan Facility Term Loan Facility and 364-Day Facility (Details Textual 1) (Details) (three hundred sixty four day senior uncedured revolving credit facility [Member])	3 Months Ended
	Apr. 30, 2014
three hundred sixty four day senior uncedured revolving credit facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, term of contract	364 days