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Commitments - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Jul. 25, 2017
USD ($)
a
Jun. 25, 2017
USD ($)
a
Jun. 09, 2017
USD ($)
a
Jun. 05, 2017
USD ($)
a
Jan. 31, 2018
USD ($)
Commitments And Contingencies [Line Items]          
Lease Expiration Date       Jul. 31, 2022  
Operating Leases, Rent Expense       $ 22,721  
Operating Leases, Rent Expense, Minimum Rentals         $ 53,000
Fifth Amendment [Member]          
Commitments And Contingencies [Line Items]          
Area of Land | a       21,908  
East Brunswick [Member] | Commitments [Member]          
Commitments And Contingencies [Line Items]          
Area of Land | a   15,000      
Operating Leases, Rent Expense   $ 8,542      
Milford [Member] | Commitments [Member]          
Commitments And Contingencies [Line Items]          
Area of Land | a 13,750        
Operating Leases, Rent Expense $ 8,707        
New York [Member] | Commitments [Member]          
Commitments And Contingencies [Line Items]          
Lease Expiration Date     Jun. 30, 2018    
Area of Land | a     12,000    
Operating Leases, Rent Expense     $ 13,000