SYNTHETIC FUEL LIMITED PARTNERSHIPS (Details) (USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2006
Partners' Capital Notes [Abstract]
Eligible Receivable Per Ton of Qualified Production (in Dollars per US Ton)				1.50
Proceeds from Divestiture of Businesses	$ 0	$ 0	$ 2,900,000