XML 55 R41.htm IDEA: XBRL DOCUMENT v3.21.1
Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Schedule Of Intangible Assets [Line Items]    
Weighted average amortization period remaining for intangible assets 12 years 3 months 18 days  
Research and Development [Member]    
Schedule Of Intangible Assets [Line Items]    
Amortization expense of intangible assets $ 6,640 $ 13,851