v2.4.0.8
Fair value (Tables)
9 Months Ended
Oct. 31, 2014
Fair Value Disclosures [Abstract]  
Schedule of Roll-forward of the amounts for instruments classified with Level 3
The following table includes a roll forward of the amounts for the three and nine months ended October 31, 2014 and 2013 for instruments classified within Level 3. The classification within Level 3 is based upon significance of the unobservable inputs to the overall fair value measurement.


Three months ended October 31,
 

Nine months ended October 31,
 
(in thousands)

2014


2013


2014


2013

Balance at beginning of period

$


$
818


$
6,182


$
818

Loss on revaluation



109


735


109

Elimination of liability due to removal of FMV provision





(6,917
)


Balance at end of period

$


$
927


$


$
927

Summary of the significant quantitative inputs and assumptions used for items categorized in Level 3 of the fair value hierarchy
Series D-3 redeemable convertible preferred stock derivative liability


January 31, 2014

Market value of common stock on measurement date

$
4.06

Projected exercise price

$
2.64

Risk-free interest rate

0.06
%
Expected lives

180 days

Expected volatility

25.2
%
Probability of liquidation event

%