DERIVATIVE INSTRUMENTS (Details) (USD $)	3 Months Ended
	Apr. 30, 2013	Jan. 31, 2013 item	Apr. 30, 2012 item
Net Investment Hedges
Liability Derivatives:
Number of derivative instruments			0
Not designated as hedging instruments
Liability Derivatives:
Number of derivative instruments			0
Foreign currency forward contracts
Liability Derivatives:
Fair value of derivative liability	$ 232,000	86,000
Amount of Gain (Loss) Recognized in Other Comprehensive Income	471,000
Amount of Gain (Loss) Recognized in Income	720,000
Foreign currency forward contracts | Net Investment Hedges
DERIVATIVE INSTRUMENTS
Notional amount outstanding	22,000,000
Maximum notional amount outstanding at any point during the period	23,600,000
Liability Derivatives:
Fair value of derivative liability	118,000
Amount of Gain (Loss) Recognized in Other Comprehensive Income	471,000
Number of derivative instruments		0	0
Foreign currency forward contracts | Not designated as hedging instruments
DERIVATIVE INSTRUMENTS
Notional amount outstanding	21,300,000	4,000,000
Maximum notional amount outstanding at any point during the period	22,100,000
Liability Derivatives:
Fair value of derivative liability	114,000	86,000
Amount of Gain (Loss) Recognized in Income	$ 720,000