Annual report pursuant to Section 13 and 15(d)

Acquisitions and Disposals - Additional Information (Detail)

v3.7.0.1
Acquisitions and Disposals - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Mar. 06, 2015
Oct. 09, 2014
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Business Acquisitions and Dispositions [Line Items]            
Goodwill     $ 76,621 $ 76,621 $ 76,747 $ 4,837
XYO            
Business Acquisitions and Dispositions [Line Items]            
Aggregate purchase price, cash   $ 2,500        
Period for cash hold back as security for indemnities   12 months        
Cash hold back as security for indemnities   $ 375        
Purchase price allocated to goodwill   1,000        
Purchase price allocated to developed technology   $ 1,500        
Impairment     $ 757      
DT Media (Appia)            
Business Acquisitions and Dispositions [Line Items]            
Business acquisition, stock issued (in shares) 18,883,723          
Reserved for future issuance (in shares) 245,955          
Estimated fair value of equity awards $ 633          
Business acquisition, per share price ($ per share) $ 3.94          
Decrease       126    
Goodwill $ 69,312     $ 69,312    
Scenario, Previously Reported | DT Media (Appia)            
Business Acquisitions and Dispositions [Line Items]            
Goodwill $ 69,438