Fair Value Measurement (Tables)

12 Months Ended

Jan. 31, 2015

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 January 31, 2015:

	Fair Value			Level 1		Level 2		Level 3
Contingent consideration	$	(4,563	)	$	—	$	—	$	(4,563	)

The following table presents information about financial assets and liabilities measured at fair value on a recurring basis as of January 31, 2014:

	Fair Value			Level 1		Level 2		Level 3
Bank certificates of deposit	$	3,990		$	—	$	3,990	$	—
Contingent consideration	(4,571		)	—		—		(4,571		)
Total	$	(581	)	$	—	$	3,990	$	(4,571	)

Significant Unobservable Input

The fair value measurement of our contingent consideration as of January 31, 2015 encompasses the following significant unobservable inputs:

Unobservable Inputs	Range
Total estimated contingent consideration	$1,515	-	$5,655
Discount rate	9.5%	-	16.0%
Timing of cash flows (in years)	0	-	4

Summary of Level 3 Activity

The following table summarizes contingent consideration activity:

Balance as of January 31, 2013	$	6,016
New contingent consideration	540
Payments	(1,266		)
Changes in fair value	(898		)
Interest accretion	179
Balance as of January 31, 2014	$	4,571
New contingent consideration	1,450
Payments	(1,589		)
Changes in fair value	(11		)
Interest accretion	142
Balance as of January 31, 2015	$	4,563

Schedule of Notes Payable

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

As of January 31,	2015		2014
Fair value of notes payable	$	310,173	$	306,535
Carrying value of notes payable	$	230,400	$	224,261