Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions - Acquisitions - Additional Information (Detail)

v3.20.2
Recent Transactions - Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 15, 2021
Jan. 31, 2021
Sep. 15, 2020
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]              
Payments to Acquire Businesses       $ 400 $ 1,250    
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