Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net - Additional Information (Detail)

v3.21.2
Intangible Assets, Net - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Amortization expenses of intangible assets $ 657 $ 664 $ 1,971 $ 2,069 $ 2,733
Intangible assets wrote off due to disposal         6
Accumulated amortization of intangible assets related to disposal         $ 6
Non-compete Agreement [Member]          
Intangible assets wrote off due to disposal       6  
Accumulated amortization of intangible assets related to disposal       $ 5