Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Additional Information (Detail)

v3.20.4
Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Intangible Assets Net Excluding Goodwill [Abstract]      
Amortization expenses of intangible assets $ 2,733 $ 2,107 $ 1,685