Fair Value Measurement (Tables)

6 Months Ended

Jul. 31, 2013

Fair Value Disclosures [Abstract]

Financial assets and liabilities measured at fair value on a recurring basis

The following table presents information about financial assets and liabilities measured at fair value on a recurring basis as of July 31, 2013:

	Fair Value			Level 1		Level 2		Level 3
Bank certificates of deposit	$	4,143		$	—	$	4,143	$	—
Contingent consideration	(4,322		)	—		—		(4,322		)
Total	$	(179	)	$	—	$	4,143	$	(4,322	)

The following table presents information about financial assets and liabilities measured at fair value on a recurring basis as of January 31, 2013:

	Fair Value			Level 1		Level 2		Level 3
Contingent consideration	$	(6,016	)	$	—	$	—	$	(6,016	)

Significant unobservable inputs

The fair value measurement of our contingent consideration as of July 31, 2013 encompasses the following significant unobservable inputs:

Unobservable Inputs	Range
Total estimated contingent consideration	$0	-	$5,551
Discount rate	14%	-	16%
Timing of cash flows (in years)	0	-	5

Summary of level 3 activity

The following table summarizes contingent consideration activity:

Balance as of January 31, 2013	$	6,016
Payments	(1,191		)
Adjustments	(603		)
Interest accretion	100
Balance as of July 31, 2013	$	4,322

Schedule of notes payable table

The following table summarizes the fair value and carrying value of notes payable:

As of	July 31, 2013		January 31, 2013
Fair value of notes payable	$	310,955	$	293,867
Carrying value of notes payable	$	221,353	$	218,546