Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.10.0.1
Subsequent Events - Additional Information (Detail) - USD ($)
9 Months Ended
Nov. 02, 2018
Nov. 01, 2018
Oct. 30, 2018
Oct. 05, 2018
Apr. 02, 2018
Sep. 30, 2018
Oct. 15, 2018
Dec. 31, 2017
Subsequent Event [Line Items]                
Common stock, par value           $ 0.001   $ 0.001
Exercise price per share of warrants         $ 6.605 $ 1.84    
Term of warrants issued           4 years 6 months    
Common stock shares issuable upon exercise of warrants         40,000 143,587    
Stockholders’ equity           $ 625   $ 625
Common stock, shares outstanding           625,318   625,318
Warrants expiration year           2023    
Common Stock Purchase Agreement [Member]                
Subsequent Event [Line Items]                
Potential common stock issuable as consideration for entering into agreement         $ 200,000      
Securities Purchase Agreement [Member]                
Subsequent Event [Line Items]                
Common stock, par value         $ 0.001      
Exercise price per share of warrants         $ 3.87      
Term of warrants issued         5 years      
Common stock shares issuable upon exercise of warrants         40,000      
Securities Purchase Agreement [Member] | Senior Convertible Promissory Note [Member]                
Subsequent Event [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%      
Subsequent Event [Member]                
Subsequent Event [Line Items]                
Common stock, par value             $ 0.001  
Net proceeds from secondary public offering     $ 5,400,000          
Common stock, shares outstanding             625,318  
Subsequent Event [Member] | Common Stock Purchase Agreement [Member]                
Subsequent Event [Line Items]                
Commitment fee paid $ 200,000              
Subsequent Event [Member] | Securities Purchase Agreement [Member] | Craven House N.A. [Member]                
Subsequent Event [Line Items]                
Ownership interest percentage 27.00%              
Subsequent Event [Member] | Securities Purchase Agreement [Member] | Senior Convertible Promissory Note [Member]                
Subsequent Event [Line Items]                
Repayments of notes payable including accrued interest       $ 500,000        
Principal amount $ 1,500,000              
Purchase price of notes issued $ 1,500,000              
Debt instrument maturity period 360 days              
Debt instrument, interest rate percentage 3.00%              
Subsequent Event [Member] | Underwriting Agreement [Member]                
Subsequent Event [Line Items]                
Potential common stock issuable as consideration for entering into agreement   $ 200,000            
Common stock, shares outstanding   1,100,000            
Subsequent Event [Member] | Underwriting Agreement [Member] | Minimum [Member]                
Subsequent Event [Line Items]                
Stockholders’ equity   $ 2,500,000            
Subsequent Event [Member] | Underwriting Agreement [Member] | Over-Allotment Option [Member]                
Subsequent Event [Line Items]                
Issuance of units     375,000          
Number of days granted to purchase additional shares     45 days          
Subsequent Event [Member] | Underwriting Agreement [Member] | Common Stock [Member] | Over-Allotment Option [Member]                
Subsequent Event [Line Items]                
Shares issued, price per share     $ 2.399999          
Subsequent Event [Member] | Underwriting Agreement [Member] | Pre-Funded Warrants Member | Over-Allotment Option [Member]                
Subsequent Event [Line Items]                
Units issued price per share     2.389999          
Subsequent Event [Member] | Underwriting Agreement [Member] | Stock Warrants [Member]                
Subsequent Event [Line Items]                
Exercise price per share of warrants     2.40          
Net proceeds from secondary public offering   $ 5,400,000            
Subsequent Event [Member] | Underwriting Agreement [Member] | Stock Warrants [Member] | Over-Allotment Option [Member]                
Subsequent Event [Line Items]                
Units issued price per share     0.000001          
Subsequent Event [Member] | Underwriting Agreement [Member] | Stock Warrants [Member] | Over-Allotment Option [Member] | Maximum [Member]                
Subsequent Event [Line Items]                
Common stock shares issuable upon exercise of warrants   375,000            
Subsequent Event [Member] | Underwriting Agreement [Member] | Common Warrants [Member]                
Subsequent Event [Line Items]                
Exercise price per share of warrants     $ 2.64          
Percentage of shares offered to underwriters     5.00%          
Warrants, price per share as percentage of public offering price     110.00%          
Term of warrants issued     3 years          
Underwriting discount     8.00%          
Subsequent Event [Member] | Underwriting Agreement [Member] | Common Warrants [Member] | Maximum [Member]                
Subsequent Event [Line Items]                
Reimbursement liability to underwriter     $ 90,000          
Subsequent Event [Member] | Underwriting Agreement [Member] | Units [Member]                
Subsequent Event [Line Items]                
Issuance of units     1,005,000          
Units issued price per share     $ 2.40          
Subsequent Event [Member] | Underwriting Agreement [Member] | Units [Member] | Common Stock [Member]                
Subsequent Event [Line Items]                
Number of securities included in each unit     1          
Common stock, par value     $ 0.001          
Subsequent Event [Member] | Underwriting Agreement [Member] | Units [Member] | Stock Warrants [Member]                
Subsequent Event [Line Items]                
Number of securities included in each unit     1          
Subsequent Event [Member] | Underwriting Agreement [Member] | Pre-Funded Units [Member]                
Subsequent Event [Line Items]                
Issuance of units     1,495,000          
Units issued price per share     $ 2.39          
Subsequent Event [Member] | Underwriting Agreement [Member] | Pre-Funded Units [Member] | Pre-Funded Warrants Member                
Subsequent Event [Line Items]                
Number of securities included in each unit     1          
Exercise price per share of warrants     $ 0.01          
Subsequent Event [Member] | Underwriting Agreement [Member] | Pre-Funded Units [Member] | Stock Warrants [Member]                
Subsequent Event [Line Items]                
Number of securities included in each unit     1