Annual report pursuant to Section 13 and 15(d)

Recent Transactions - Acquisitions - Additional Information (Detail)

v3.20.4
Recent Transactions - Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
Sep. 15, 2021
Jan. 31, 2021
Sep. 15, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]            
Goodwill       $ 23,757 $ 23,998 $ 26,789
Hyper Pixel Website [Member]            
Business Acquisition [Line Items]            
Business acquisition, effective date of acquisition     Sep. 15, 2020      
Business Combination, Consideration Transferred     $ 1,100      
Business Combination, Consideration due $ 300 $ 400        
Payments to Acquire Businesses     400      
Goodwill     $ 100