v2.4.0.8
Commitments and Contingencies - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified
 0 Months Ended 6 Months Ended 12 Months Ended 0 Months Ended
Sep. 23, 2014
Jun. 04, 2014
Mar. 12, 2013
Oct. 31, 2014
Apr. 30, 2014
Jun. 04, 2014
Jun. 12, 2012
PowerReviews
Jun. 12, 2012
PowerReviews
Oct. 31, 2014
Minimum
Oct. 31, 2014
Maximum
Commitments and Contingencies Disclosure [Line Items]                    
Shares of common Stock issued in business acquisition             6.4      
Business acquisition total consideration             $ 150,800,000      
Number of vested and unvested options equivalent to the acquired company's option               1.7    
Definitive agreement to divest PowerReviews, expected cash proceed   30,000,000   30,000,000            
Amount that will be placed into escrow as partial security for the Company's indemnification obligations           4,500,000        
Loss on disposal of discontinued operations, net of taxes       (10,729,000)            
Loss on disposal of discontinued operations, net of taxes, previously recognized         (9,192,000)          
Loss on disposal of discontinued operations, net of tax, recognized in current period       (1,537,000)            
Damages sought in shareholder derivative action     91,400,000              
Final hearing of shareholder derivative action, date Nov. 24, 2014                  
Sales tax liability estimate                 2,800,000 3,300,000
Sales tax liability accrual       $ 3,100,000