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Related Party Transactions and Balances - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]        
Salary and benefits to employee   $ 114 $ 118 $ 110
Outstanding loan balance repaid by employee $ 124      
Grid Loan Agreement [Member]        
Related Party Transaction [Line Items]        
Loans receivable, related parties   $ 3,256 $ 3,545  
VF Hemp [Member]        
Related Party Transaction [Line Items]        
Debt securities maturity date   Mar. 25, 2022    
Loan interest rate percentage   8.00%