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Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended
Jan. 01, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]    
Unrecognized income tax benefits   $ 0
Federal    
Income Tax Disclosure [Abstract]    
Number of years for examination   Four
New York    
Income Tax Disclosure [Abstract]    
Number of years for examination   Four
Connecticut    
Income Tax Disclosure [Abstract]    
Number of years for examination   Four
Pennsylvania    
Income Tax Disclosure [Abstract]    
Number of years for examination   Four
New Jersey    
Income Tax Disclosure [Abstract]    
Number of years for examination   Five
Subsequent Event    
Income Tax Disclosure [Abstract]    
Net operating loss carryforward $ 1,600,000  
Subsequent Event | Minimum    
Income Tax Disclosure [Abstract]    
Annual limitation of federal NOLs $ 1,000,000  
Expiration date of net operating loss carryforward Dec. 31, 2018  
Subsequent Event | Maximum    
Income Tax Disclosure [Abstract]    
Annual limitation of federal NOLs $ 2,200,000  
Expiration date of net operating loss carryforward Dec. 31, 2024