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Leases - Additional Information (Detail) - USD ($)
 3 Months Ended 24 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Aug. 31, 2022
Dec. 31, 2020
Jan. 01, 2019
Lessee Lease Description [Line Items]          
Operating right-of-use asset $ 953,852     $ 1,103,761  
Operating lease liabilities 1,046,271     $ 1,211,583  
Fixed cost operating lease expense $ 158,000 $ 150,000      
Sublease commencement period Dec. 01, 2019        
Sublease expiration, month and year 2022-08        
Sublease income, net of amortized leasing costs $ 13,000        
Texas [Member]          
Lessee Lease Description [Line Items]          
Operating lease period 84 months        
Operating lease, remaining lease term 1 year 6 months        
Operating lease, effective interest rate 2.456%        
North Carolina [Member] | Green Remedies [Member]          
Lessee Lease Description [Line Items]          
Operating right-of-use asset $ 80,000        
Operating leases expiration period 2023-10        
Operating lease, remaining lease term 2 years 6 months        
Operating lease, effective interest rate 9.50%        
ASU 2016-02 [Member]          
Lessee Lease Description [Line Items]          
Operating right-of-use asset         $ 2,000,000
Operating lease liabilities         $ 2,200,000
Scenario, Forecast [Member]          
Lessee Lease Description [Line Items]          
Operating lease minimum annual incentive payment     $ 93,600