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Share-Based Payments - Additional Information (Detail)
1 Months Ended 12 Months Ended
Apr. 30, 2015
Jan. 31, 2015
Jan. 31, 2014
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
shares
Dec. 31, 2013
USD ($)
shares
Dec. 31, 2012
$ / Warrants
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares available for future grant       708,123      
Awarded       734,823 610,143 996,990  
Restricted stock surrendered, in values | $       $ 1,000 $ 2,000 $ 34,000  
Restricted stock, unvested       411,409 568,057 721,752 95,315
Forfeited       663,855 544,651 290,125  
Unrecognized compensation, non-vested restricted stock awards | $       $ 1,800,000      
Unrecognized compensation, non-vested restricted stock awards expected recognized period       1 year 10 months 6 days      
Recognition Technology in Connection with Toy Products              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of stock warrants granted to third party in connection with acquisition             1,500,000
Exercise price of warrants | $ / Warrants             16.28
Warrants exercisable term             5 years
Stock Option And Award Plans              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Reserved shares of common stock for future issuance       6,525,000      
Stock Options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       4 years      
Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awarded       734,823 610,143 996,990  
Shares of restricted stock cancelled       51,633   4,582  
Restricted stock surrendered, (in shares)       52,024 51,877 7,540  
Restricted stock, unvested       411,409 568,057 721,752  
Weighted average grant date fair value | $       $ 2,700,000 $ 3,700,000 $ 5,000,000  
Restricted Stock | Non-employee directors              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock grants | $       $ 100,000      
Awarded       73,855 78,150 54,227  
Restricted Stock | Executive officer              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awarded         531,993 285,543  
Shares of restricted stock issued       660,968      
Forfeited       612,221      
Restricted Stock | Non-executive employees              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awarded           657,220  
Shares of restricted stock issued         12,658    
Restricted Stock | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       1 year      
Restricted Stock | Minimum | Executive officer              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period 1 year 1 year 1 year        
Restricted Stock | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       2 years      
Restricted stock surrendered, in values | $         $ 100,000 $ 100,000  
Restricted Stock | Maximum | Executive officer              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period 3 years 3 years 3 years