Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Awards and Per Share Information - Additional Information (Detail)

v3.7.0.1
Stock-Based Awards and Per Share Information - Additional Information (Detail)
3 Months Ended
Mar. 27, 2017
SeniorVicePresidentChiefFinancialOfficer
$ / shares
shares
Mar. 13, 2017
shares
Feb. 06, 2017
$ / shares
shares
Mar. 31, 2017
USD ($)
$ / shares
shares
Sep. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
$ / shares
shares
Apr. 18, 2016
VicePresident
$ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Compensation expense related to stock options | $       $ 379,000   $ 834,000  
Net impact of share based compensation expense to earnings per basic share | $ / shares       $ 0.01   $ 0.01  
Net impact of share based compensation expense to earnings per diluted share | $ / shares       $ 0.01   $ 0.01  
Total unrecognized compensation cost | $         $ 5,300,000    
Unrecognized share based compensation cost to be recognized over weighted-average period         2 years 4 months 24 days    
Reversal of share based compensation expense | $       $ 428,000      
Number of newly hired vice presidents | VicePresident             1
Number of senior vice president and chief financial officer | SeniorVicePresidentChiefFinancialOfficer 1            
Outstanding stock options, restricted stock units and warrants excluded from diluted loss per share       22,927,127   15,227,739  
Stock Options | Employees              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock options granted     611,000        
Awards valued per share | $ / shares     $ 1.55        
Options expiration period     10 years        
Stock Options | Existing Employees              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock options granted     586,000        
Stock Options | Existing Employees | Vest on First Anniversary of Award Date              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage     50.00%        
Stock Options | Existing Employees | Vest on Second Anniversary of Award Date              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage     50.00%        
Stock Options | New Employees              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date     Mar. 06, 2018        
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period     36 months        
Options vesting description       For the 25,000 options awarded to new employees, 25% vest on February 6, 2018 and the remainder vest ratably over the 36-month period, commencing on March 6, 2018.      
Stock Options | New Employees | Vest on February 6, 2018              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock options granted     25,000        
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date     Feb. 06, 2018        
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage     25.00%        
Stock Options | Vice Presidents              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock options granted   400,000          
Awards valued per share | $ / shares             $ 1.17
Options expiration period   10 years          
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date   Mar. 13, 2018          
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period   36 months          
Percentage of time based vesting for options             75.00%
Stock Options | Vice Presidents | Awards Vesting on March 13, 2018              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage   25.00%          
Non Qualified Stock Options | Senior Vice President and Chief Financial Officer              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock options granted 600,000            
Awards valued per share | $ / shares $ 1.28            
Options expiration period 10 years            
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date Mar. 27, 2018            
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period 36 months            
Percentage of time based vesting for options 75.00%            
Non Qualified Stock Options | Senior Vice President and Chief Financial Officer | Awards Vesting on March 27, 2018              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage 25.00%            
Restricted Stock Units (RSUs)              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards valued per share | $ / shares     $ 1.55        
Granted     80,000 1,080,000      
Vest in period       94,761      
Restricted Stock Units (RSUs) | Vest on March 14, 2017              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     Mar. 14, 2017        
Vest in period     30,000        
Restricted Stock Units (RSUs) | Vest on September 14, 2017              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     Sep. 14, 2017        
Vest in period     20,000        
Restricted Stock Units (RSUs) | Vest on May 10, 2018              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     May 10, 2018        
Vest in period     30,000        
Restricted Stock Units (RSUs) | President And Chief Executive Officer              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards valued per share | $ / shares     $ 1.55        
Options vesting description     (i) one-quarter of the RSUs vest on February 6, 2019, (ii) one-eighth of the RSUs vest on February 6, 2020, (iii) one-eighth of the RSUs vest on February 6, 2021, and (iv) one-half of the RSUs vest upon the achievement of specific interim and annual Company performance criteria        
Granted     1,000,000        
Restricted Stock Units (RSUs) | President And Chief Executive Officer | Vest on February 6, 2017              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     Feb. 06, 2019        
Restricted Stock Units (RSUs) | President And Chief Executive Officer | Vest on February 6, 2020              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     Feb. 06, 2020        
Restricted Stock Units (RSUs) | President And Chief Executive Officer | Vest on February 6, 2021              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Date     Feb. 06, 2021        
2002 Stock Incentive Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Plan expiration date       May 05, 2019      
Common stock authorized for issuance under the 2002 Plan       15,550,000      
Common stock issued pursuant to options exercised       3,651,829      
Options and restricted stock units outstanding       8,420,559      
Options available for future grants       3,477,612