FINANCING ARRANGEMENTS (Details)	12 Months Ended
	Jan. 31, 2016 USD ($) item	Jan. 31, 2015 USD ($)
Financing Arrangements
Number of outstanding letters of credit | item	2
Expires on June 30, 2016
Financing Arrangements
Letters of credit outstanding amount	$ 451,000
Expires on August 31, 2016
Financing Arrangements
Letters of credit outstanding amount	439,000
Revolving Credit Facility
Financing Arrangements
Borrowing available under financing arrangements	10,000,000
Borrowings outstanding under Bank financing arrangements	0	$ 0
Borrowing amount designated to cover letters of credit issued by Bank in support of project development activities	$ 1,350,000
London Interbank Offered Rate (LIBOR) | Revolving Credit Facility
Financing Arrangements
Variable rate	30–day LIBOR
Interest rate margin on referred rate	2.00%