Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Note - Additional Information (Detail)

v3.8.0.1
Stockholders' Equity Note - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Jul. 05, 2017
Jun. 28, 2017
Nov. 07, 2016
Aug. 09, 2016
Nov. 17, 2015
Apr. 24, 2015
Jan. 31, 2018
Dec. 30, 2016
Dec. 31, 2017
Dec. 31, 2016
Class of Stock [Line Items]                    
Proceeds from issuance of common stock                 $ 14,932,547 $ 34,788,311
Dialog Semiconductor Plc [Member]                    
Class of Stock [Line Items]                    
Class of warrant or right, exercise price of warrants or rights   $ 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   654,013 763,552              
Dialog Semiconductor Plc [Member] | Warrants Issued to Private Investors [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues   976,139 763,552              
Stock issued during period, value, new issues $ 14,999,935   $ 10,000,011              
Subsequent Event [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues             2,221,455      
Common stock, discount on shares             $ 1,000,000      
Stock issued during period, value, new issues             $ 38,999,989      
Private Placement [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, value, new issues       $ 20,000,000            
Class of warrant or right, exercise price of warrants or rights       $ 23.00            
Private Placement [Member] | Ascend Legemd Master Fund [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues       1,618,123            
Share price       $ 12.36            
Class of warrant or right, number of securities called by warrants or rights       1,618,123            
Private Placement [Member] | Dialog Semiconductor Plc [Member]                    
Class of Stock [Line Items]                    
Share price   $ 15.3666 $ 13.0967              
Private Placement [Member] | JT Group [Member]                    
Class of Stock [Line Items]                    
Stock issued during period, shares, new issues               292,056    
Share price               $ 17.12    
Stock issued during period, value, new issues               $ 4,999,975    
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         3,000,005          
Share price         $ 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