Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Other Financing Arrangements - Additional Information (Detail)

v3.10.0.1
Long-Term Debt and Other Financing Arrangements - Additional Information (Detail)
9 Months Ended
Apr. 02, 2018
USD ($)
Day
$ / shares
shares
Sep. 30, 2018
$ / shares
shares
Dec. 31, 2017
$ / shares
Debt Instrument [Line Items]      
Term of warrants issued   4 years 6 months  
Warrants, price per share | $ / shares $ 6.605 $ 1.84  
Common stock shares issuable upon exercise of warrants | shares 40,000 143,587  
Common stock, par value | $ / shares   $ 0.001 $ 0.001
Securities Purchase Agreement [Member]      
Debt Instrument [Line Items]      
Term of warrants issued 5 years    
Warrants, price per share | $ / shares $ 3.87    
Common stock shares issuable upon exercise of warrants | shares 40,000    
Common stock, par value | $ / shares $ 0.001    
Debt instrument conversion price percentage of lowest daily volume weighted average price of common stock 85.00%    
Debt instrument convertible threshold trading days immediately prior to conversion | Day 10    
Securities Purchase Agreement [Member] | Senior Convertible Promissory Note [Member]      
Debt Instrument [Line Items]      
Principal amount | $ $ 500,000    
Purchase price of notes issued | $ $ 500,000    
Debt instrument maturity period 9 months    
Debt instrument, interest rate percentage 10.50%    
Common Stock Purchase Agreement [Member]      
Debt Instrument [Line Items]      
Potential common stock issuable as consideration for entering into agreement | $ $ 200,000    
Common Stock Purchase Agreement [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Potential common stock issuable amount | $ $ 5,000,000    
Purchase agreement term 2 years