Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Deficit) - Additional Information (Detail)

v3.21.2
Stockholders' Equity (Deficit) - Additional Information (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Class Of Stock [Line Items]    
Net proceeds from stock issuance   $ 6,517
Exercise of warrants $ 2,279 2,100
JMP Securities [Member]    
Class Of Stock [Line Items]    
Net proceeds from stock issuance   $ 5,996
Common Stock [Member]    
Class Of Stock [Line Items]    
Shares issued to outside service provider, shares 15,828  
Common stock shares issued   1,491,317
Exercise of warrants $ 2,279 $ 2,100
Exercise of warrants issued, shares for cash consideration 252,218 154,311
Aggregate exercise of warrants issued, shares 84,723  
Issued warrants to purchase shares upon exercises 91,833  
Common Stock [Member] | Pandologic Ltd [Member]    
Class Of Stock [Line Items]    
Business acquisition, shares issued or issuable 1,704,822  
Common Stock [Member] | Machine Box [Member]    
Class Of Stock [Line Items]    
Business acquisition, shares issued or issuable   105,898
Common Stock [Member] | JMP Securities [Member]    
Class Of Stock [Line Items]    
Common stock shares issued   1,491,317
Stock issuance costs   $ 281
Common Stock and Employee Stock Purchase Plan [Member]    
Class Of Stock [Line Items]    
Shares issued in connection with stock option exercise 1,084,941 297,490