Land Held for Divestiture (Details) (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Schedule of net gain loss on land held for divestiture [Abstract]
Sales of land held for divestiture	$ 712,000	$ 0
Cost of sales of land held for divestiture	(260,000)	0
Net gain on land held for divestiture activity	$ 452,000	$ 0