Quarterly report pursuant to Section 13 or 15(d)

Customer Concentration - Additional Information (Detail)

v3.10.0.1
Customer Concentration - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Customer
Jun. 30, 2017
Customer
Jun. 30, 2018
USD ($)
Customer
Jun. 30, 2017
Customer
Dec. 31, 2017
USD ($)
Concentration Risk [Line Items]          
Accounts receivable | $ $ 205,773   $ 205,773   $ 0
Revenues [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of customers 1 1 1 1  
Concentration percentage 97.00% 100.00% 97.00% 100.00%  
Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of customers     1 1  
Concentration percentage     97.00%