Debt Mortgage TN (Details) (Secured Debt [Member], USD $)	3 Months Ended	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2012
Secured Debt [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage TN, issuance date		Jun. 19, 2012
Mortgage Loans on Real Estate, Face Amount of Mortgages	$ 1,800,000	$ 1,800,000
Mortgage TN, interest rate at period end	4.50%	4.50%
Periodic payment		$ 13,000
Mortgage TN, maturity date	Jul. 01, 2027
Mortgage TN, interest rate changes		Jun. 19, 2022
Mortgage TN, basis spread on variable rate	2.00%	2.00%
Mortgage TN, maximum interest rate	18.00%
Mortgage TN, minimum interest rate	4.50%