Annual report pursuant to Section 13 and 15(d)

Subsequent Events (unaudited) - Additional Information (Detail)

v3.7.0.1
Subsequent Events (unaudited) - Additional Information (Detail) - $ / shares
12 Months Ended
Feb. 06, 2017
Feb. 26, 2016
Dec. 31, 2016
Dec. 31, 2014
Stock Options | Existing Employees | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Stock options granted   185,000    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   48 months    
Stock Options | New Employees        
Subsequent Event [Line Items]        
Options vesting description     For the 25,000 options awarded to new employees, 25% vest on February 6, 2018 and the remainder ratably over the 36-month period, commencing on March 6, 2018.  
Stock Options | New Employees | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Stock options granted   110,000    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   36 months    
Stock Options | New Employees | Vest on First Anniversary of Award Date | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Vesting rights percentage   25.00%    
Stock Options | President And Chief Executive Officer        
Subsequent Event [Line Items]        
Stock options granted     1,400,000  
Options expiration period     10 years  
Restricted Stock Units (RSUs)        
Subsequent Event [Line Items]        
Restricted stock units granted     906,773 36,868
Restricted Stock Units (RSUs) | President And Chief Executive Officer        
Subsequent Event [Line Items]        
Awards valued per share   $ 0.86    
Restricted stock units granted   59,523    
Subsequent Event | Stock Options | Employees        
Subsequent Event [Line Items]        
Stock options granted 611,000      
Awards valued per share $ 1.55      
Options expiration period 10 years      
Subsequent Event | Stock Options | Existing Employees        
Subsequent Event [Line Items]        
Stock options granted 586,000      
Subsequent Event | Stock Options | Existing Employees | Vest on First Anniversary of Award Date        
Subsequent Event [Line Items]        
Vesting rights percentage 50.00%      
Subsequent Event | Stock Options | Existing Employees | Vest on Second Anniversary of Award Date        
Subsequent Event [Line Items]        
Vesting rights percentage 50.00%      
Subsequent Event | Stock Options | New Employees        
Subsequent Event [Line Items]        
Stock options granted 25,000      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Feb. 06, 2018      
Vesting rights percentage 25.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 36 months      
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date Mar. 06, 2018      
Subsequent Event | Restricted Stock Units (RSUs) | Employees | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Awards valued per share $ 1.55      
Restricted stock units granted 80,000      
Subsequent Event | Restricted Stock Units (RSUs) | Employees | Vest on March 14, 2017 [Member] | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Mar. 14, 2017      
Restricted stock units expected to vest 30,000      
Subsequent Event | Restricted Stock Units (RSUs) | Employees | Vest on September 14, 2017 [Member] | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Sep. 14, 2017      
Restricted stock units expected to vest 20,000      
Subsequent Event | Restricted Stock Units (RSUs) | Employees | Vest on May 10, 2018 [Member] | Two Thousand Sixteen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date May 10, 2018      
Restricted stock units expected to vest 30,000      
Subsequent Event | Stock-settled RSUs | President And Chief Executive Officer | Two Thousand Seventeen Compensation Plan        
Subsequent Event [Line Items]        
Awards valued per share $ 1.55      
Restricted stock units granted 1,000,000      
Subsequent Event | Stock-settled RSUs | President And Chief Executive Officer | Vest on February 6, 2019 | Two Thousand Seventeen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Feb. 06, 2019      
Vesting rights percentage 25.00%      
Subsequent Event | Stock-settled RSUs | President And Chief Executive Officer | Vest on February 6, 2020 | Two Thousand Seventeen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Feb. 06, 2020      
Vesting rights percentage 12.50%      
Subsequent Event | Stock-settled RSUs | President And Chief Executive Officer | Vest on February 6, 2021 | Two Thousand Seventeen Compensation Plan        
Subsequent Event [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date Feb. 06, 2021      
Vesting rights percentage 12.50%      
Subsequent Event | Stock-settled RSUs | President And Chief Executive Officer | Vest upon Achievement of Specific Interim and Annual Company Performance Criteria | Two Thousand Seventeen Compensation Plan        
Subsequent Event [Line Items]        
Vesting rights percentage 50.00%