Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.10.0.1
Stockholders' Equity - Additional Information (Detail)
1 Months Ended 6 Months Ended
Jul. 05, 2017
USD ($)
Jun. 28, 2017
$ / shares
shares
Dec. 30, 2016
USD ($)
$ / shares
shares
Nov. 07, 2016
USD ($)
$ / shares
shares
Aug. 09, 2016
USD ($)
$ / shares
shares
Apr. 24, 2015
USD ($)
Jan. 31, 2018
USD ($)
Jul. 31, 2017
USD ($)
Nov. 30, 2015
USD ($)
$ / shares
shares
Jun. 30, 2018
USD ($)
Vote
Class of Stock [Line Items]                    
Number of common stock voting entitlement per share | Vote                   1
Shelf registration statement expiration date           2018-04        
Proceeds from issuance of common stock                   $ 38,846,815
Dialog Semiconductor Plc [Member]                    
Class of Stock [Line Items]                    
Class of warrant or right, exercise price of warrants or rights | $ / shares   $ 19.9766   $ 17.0257            
Dialog Semiconductor Plc [Member] | Common Stock [Member]                    
Class of Stock [Line Items]                    
Class of warrant or right, number of securities called by warrants or rights | shares   654,013   763,552            
Dialog Semiconductor Plc [Member] | Warrant Issued to Private Investors [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues | shares   976,139   763,552            
Stock issued during period, value, new issues $ 14,999,935     $ 10,000,011            
Consummation of Offering Under Shelf Registration [Member]                    
Class of Stock [Line Items]                    
Proceeds from shelf registration debt or equity securities           $ 75,000,000        
Stock issued during period, shares, new issues | shares                 3,000,005  
Share price | $ / shares                 $ 6.90  
Proceeds from issuance of common stock                 $ 19,333,032  
Common stock, discount on shares                 1,242,002  
Stock offering expenses on issue of common stock                 125,000  
Additional stock offering expenses on issue of common stock                 284,576  
Proceeds from issuance of common stock net off offering expenses and discount                 $ 19,048,456  
At-the-Market [Member]                    
Class of Stock [Line Items]                    
Proceeds from issuance of common stock                   $ 38,846,815
Stock issued during period, value, new issues             $ 38,846,815      
Underwriter’s discount and issuance costs             $ 1,153,715      
Private Placements [Member]                    
Class of Stock [Line Items]                    
Proceeds from issuance of common stock               $ 14,932,547    
Stock issued during period, value, new issues         $ 20,000,000          
Class of warrant or right, exercise price of warrants or rights | $ / shares         $ 23.00          
Private Placements [Member] | Ascend Legemd Master Fund                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues | shares         1,618,123          
Share price | $ / shares         $ 12.36          
Class of warrant or right, number of securities called by warrants or rights | shares         1,618,123          
Private Placements [Member] | Dialog Semiconductor Plc [Member]                    
Class of Stock [Line Items]                    
Share price | $ / shares   $ 15.3666   $ 13.0967            
Private Placements [Member] | JT Group [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues | shares     292,056              
Share price | $ / shares     $ 17.12              
Stock issued during period, value, new issues     $ 4,999,975