DEBT, Credit Facility (Details) - Rabobank N.A [Member] - Unsecured Credit Agreement [Member] $ in Thousands	12 Months Ended
	Jan. 31, 2016 USD ($)
Credit Facility [Abstract]
Maximum borrowing capacity	$ 20,000
Unused capacity commitment fee	0.25%
Unused capacity commitment fee average daily, amount	$ 20,000
Effective borrowing rate	1.18%
Liquidity on a consolidated basis, minimum	$ 25,000
Current ratio, minimum	1.3
Leverage ratio, maximum	1.5
Debt service coverage ratio, minimum	1.5
Borrowings outstanding	$ 0
LIBOR [Member]
Credit Facility [Abstract]
One month LIBOR	0.75%