DEBT (Details)	3 Months Ended
	Apr. 30, 2013 USD ($)	Jan. 31, 2013 USD ($)	Apr. 30, 2013 Domestic unsecured line of credit [Member] USD ($)	Jan. 31, 2013 Domestic unsecured line of credit [Member] USD ($)	Apr. 30, 2013 Foreign unsecured line of credit [Member] USD ($)	Apr. 30, 2013 Foreign unsecured line of credit [Member] EUR (€)	Jan. 31, 2013 Foreign unsecured line of credit [Member] USD ($)
Line of Credit Facility [Line Items]
Available borrowing capacity under lines of credit	$ 4,395,040				$ 395,040	€ 300,000
Amount outstanding under lines of credit			0	0	0		0
Interest rate swap agreement [Abstract]
Term of interest rate swap	15 years
Bond payable maturity date	Apr. 30, 2021
Variable rate basis	ninety-day LIBOR
Fixed interest rate (in hundredths)	4.87%
Effective fixed interest rate (in hundredths)	7.06%
Interest rate floor provision (in hundredths)	2.50%
Decrease in equity to date resulting from fair value of interest rate swap agreement	$ 190,907	$ 190,873