Quarterly report pursuant to Section 13 or 15(d)

Customer Concentrations - Additional Information (Detail)

v3.20.2
Customer Concentrations - Additional Information (Detail) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Customer
Jun. 30, 2019
Customer
Jun. 30, 2020
USD ($)
Customer
Jun. 30, 2019
Customer
Dec. 31, 2019
Customer
Revenues [Member]          
Concentration Risk [Line Items]          
Number of customers 2 2 2 3  
Concentration percentage 96.00% 95.00% 85.00% 75.00%  
Accounts Receivable [Member]          
Concentration Risk [Line Items]          
Number of customers     1   4
Concentration percentage     85.00%   100.00%
Accounts Receivable [Member] | Dialog Semiconductor Plc [Member]          
Concentration Risk [Line Items]          
Accounts receivable | $ $ 89,375   $ 89,375