FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jul. 31, 2012

FAIR VALUE MEASUREMENTS [Abstract]

Summary of Financial Assets, Measured at Fair Value

The following table sets forth the financial assets and liabilities, measured at fair value, as of July 31, 2012 and January 31, 2012:

	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 July 31, 2012	$	50,180	$	—		$	—
Money market mutual funds as of January 31, 2012	$	48,242	$	—		$	—
Liability related to interest rate swap as of July 31, 2012	$	—	$	(857	)	$	—

Fair Value of Derivative Instrument

The fair values of the derivative instrument at July 31, 2012 and January 31, 2012 were as follows (in thousands):

	Asset/(Liability) Derivative
		Fair Value
	Balance Sheet Location	July 31, 2012			January 31, 2012
Derivative instrument:
Interest rate swap	Other liabilities	$	(857	)	$	—
Total		$	(857	)	$	—