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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]    
Amortization of intangibles $ 365,524 $ 297,351
Indefinite-lived intangible assets other than goodwill 0  
Goodwill not deductible for tax purposes 58,200,000  
Goodwill added for asset acquisition 8,100,000  
Impairment of goodwill $ 0