Annual report pursuant to Section 13 and 15(d)

Customer Concentration - Additional Information (Detail)

v3.10.0.1
Customer Concentration - Additional Information (Detail)
12 Months Ended
Dec. 31, 2018
USD ($)
Customer
Dec. 31, 2017
USD ($)
Customer
Concentration Risk [Line Items]    
Accounts receivable | $ $ 44,550 $ 0
Revenues [Member] | Customer Concentration Risk [Member]    
Concentration Risk [Line Items]    
Number of customers 1 1
Concentration percentage 92.00% 96.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Concentration Risk [Line Items]    
Number of customers 1  
Concentration percentage 56.00%