Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.10.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
8 Months Ended 12 Months Ended
Jun. 28, 2017
Dec. 31, 2018
Dec. 31, 2017
Strategic Alliance Agreement [Member]      
Related Party Transaction [Line Items]      
Revenue   $ 5,773 $ 0
Dialog Semiconductor Plc [Member]      
Related Party Transaction [Line Items]      
Equity method investment, ownership percentage     6.60%
Percentage of common shares potentially own outstanding shares     11.30%
Dialog Semiconductor Plc [Member] | Research and Development Expense [Member]      
Related Party Transaction [Line Items]      
Payments for fees   $ 79,550 $ 516,725
Private Placements [Member] | Dialog Semiconductor Plc [Member]      
Related Party Transaction [Line Items]      
Stock issued during period, shares, new issues 1,739,691    
Private Placements [Member] | Dialog Semiconductor Plc [Member] | Warrant Issued to Private Investors [Member]      
Related Party Transaction [Line Items]      
Class of warrant or right, number of securities called by warrants or rights 1,417,565