Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v3.10.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
6 Months Ended 8 Months Ended
Jun. 30, 2018
Jun. 28, 2017
Dialog Semiconductor Plc [Member]    
Related Party Transaction [Line Items]    
Equity method investment, ownership percentage 6.80%  
Percentage of common shares potentially own outstanding shares 11.70%  
Dialog Semiconductor Plc [Member] | Research and Development Expense [Member]    
Related Party Transaction [Line Items]    
Payments for fees $ 43,700  
Strategic Alliance Agreement [Member]    
Related Party Transaction [Line Items]    
Revenue $ 5,773  
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] | Warrant Issued to Private Investors [Member] | Dialog Semiconductor Plc [Member]    
Related Party Transaction [Line Items]    
Class of warrant or right, number of securities called by warrants or rights   1,417,565