FAIR VALUE MEASUREMENTS (Details) (USD $)	12 Months Ended					2 Months Ended	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014 Guaranteed Payment [Member] Payment April 2015 [Member]	Jan. 31, 2014 Contingent upon Certain Milestones [Member] Payment April 2015 [Member]	Apr. 01, 2014 Subsequent Event [Member] Payment April 2014 [Member]	Mar. 31, 2014 Subsequent Event [Member] Other (Income) Expense [Member] Payment April 2014 [Member]	Jan. 31, 2014 Interest Rate Swap [Member]	Jan. 31, 2013 Interest Rate Swap [Member]	Jan. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other Assets [Member]	Jan. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other Liabilities [Member]	Jan. 31, 2014 Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Recurring [Member]	Jan. 31, 2013 Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Recurring [Member]	Jan. 31, 2014 Significant Other Observable Inputs (Level 2) [Member] Recurring [Member]	Jan. 31, 2013 Significant Other Observable Inputs (Level 2) [Member] Recurring [Member]	Jan. 31, 2014 Significant Unobservable Inputs (Level 3) [Member] Recurring [Member]	Jan. 31, 2013 Significant Unobservable Inputs (Level 3) [Member] Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market mutual funds											$ 57,204,000	$ 44,871,000	$ 0	$ 0	$ 0	$ 0
Asset related to interest rate swap											0		250,000		0
Liability related to interest rate swap												0		(384,000)		0
Cash deposited with commercial banks	18,800,000	20,100,000
Contingent liability associated with acquisitions											0	0	0	0	(1,178,000)	(1,392,000)
Derivatives, Fair Value [Line Items]
Description of variable rate basis	One month LIBOR						one month LIBOR
Interest rate swap									250,000	(384,000)
Change in fair value recognized in net income							600,000	(400,000)
Key Assumptions [Abstract]
Discount rate (in hundredths)	4.60%
Business Acquisition, Contingent Consideration [Line Items]
Decrease in contingent consideration						(300,000)
Contingent consideration paid					500,000
Contingent consideration payable			$ 300,000	$ 500,000