FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Jan. 31, 2015

FAIR VALUE MEASUREMENTS [Abstract]

Summary of financial assets and liabilities, measured at fair value

The following table sets forth the financial assets, measured at fair value, as of January 31, 2015 and January 31, 2014:

	Fair value measurement at reporting date using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in thousands)
Money market mutual funds as of January 31, 2015	$	98,294
Money market mutual funds as of January  31, 2014	$	57,204
Liability related to the interest rate swap as of January 31, 2015			$	(626	)
Asset related to the  interest rate swap as of January 31, 2014			$	250
Contingent liability associated with acquisitions as of January 31, 2015						$	(750	)
Contingent liability associated with   acquisitions as of January 31, 2014						$	(1,178	)

Fair values of the derivative instrument

The fair values of the derivative instrument at January 31, 2015 and January 31, 2014 were as follows (in thousands):

	(Liability) / Asset Derivative
		Fair Value
	Balance Sheet Location		January 31, 2015			January 31, 2014
Derivative instrument:
Interest rate swap	Other (liabilities) assets		$	(626	)	$	250
Total			$	(626	)	$	250