Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans - Additional Information (Detail)

v3.3.1.900
Stock-Based Compensation Plans - Additional Information (Detail) - USD ($)
12 Months Ended
May. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for future issuance   5,681,689    
Common stock, issued   159,645,000 129,714,000  
Unrecognized compensation expense for restricted stock   $ 1,425,000    
Unrecognized compensation expense for restricted stock amortized period   3 years    
Total intrinsic value       $ 95,000
Number of options exercised   0 0  
Intrinsic value of outstanding exercisable options   $ 0    
Stock-based compensation expenses   2,719,000 $ 1,711,000 809,000
Employees        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expenses   2,422,000 1,751,000 303,000
Non Employees        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense (benefit)   297,000 (40,000) $ 506,000
Bonus and Commissions        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expenses   $ 1,123,000 $ 941,000  
2013 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for future issuance   2,462,186    
Common stock, issued 6,000,000      
Shares awarded for incentive compensation   831,150    
2013 Plan | Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options awarded, cumulative grants under the Plan   25,000    
2013 Plan | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted shares, cumulative awards under the Plan   2,706,664    
2013 Plan | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options exercise price, percentage 100.00%      
2013 Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant Expiration Date 10 years      
Two Thousand Three Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for future issuance   289,834    
Percentage of option price   100.00%    
Stock awards vesting periods   3 years    
Shares of common stock vested and exercisable   289,834    
Performance options expired     7,640 153,600
Two Thousand Three Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant Expiration Date   10 years    
Employee Restricted Stock Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average term   3 years