Annual report pursuant to Section 13 and 15(d)

Share-based Compensation - Additional Information (Detail)

v3.6.0.2
Share-based Compensation - Additional Information (Detail) - USD ($)
 12 Months Ended
Sep. 07, 2016
May 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Apr. 23, 2014
May 27, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares received from employees for tax withholding obligations     100,000 100,000    
Shares of common stock authorized for purchase by eligible employees at a discount through payroll deductions   200,000        
Maximum fair market value of shares an employee can purchase   $ 25,000        
Employee stock purchase plan, discount rate   15.00%        
Additional shares approved for issuance under plan 350,000          
Shares available for future issuance     363,821      
Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of Shares, Granted     0 61,663    
Period of recognize the cost       2019    
Stock Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Issuance of shares of common stock     500,000      
Vesting period       12 months    
Stock options granted     600,000 500,000    
Stock Options [Member] | Chief Executive Officer [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted     0 200,000    
Minimum [Member] | Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period     3 years      
Minimum [Member] | Stock Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period     3 years      
Maximum [Member] | Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period     4 years      
Issuance of shares of common stock     100,000      
Vesting period     4 years      
Pre-tax total unrecognized compensation cost related to non-vested restricted shares       $ 100,000    
Maximum [Member] | Stock Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period     10 years      
2014 Amended and Restated Stock Incentive Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Issuance of shares of common stock     2,000,000   2,000,000  
Availability of common shares     700,000      
Additional share issued under stock incentive plan           3,000,000