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Line of Credit - Additional Information (Detail) - UBS [Member] - Line of Credit [Member] - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Nov. 30, 2017
Dec. 31, 2021
Debt issuance costs, Line of credit arrangements, Net $ 0  
Line of credit facility, Description There was no stated maturity date, there were no financial covenants and the amount of the line of credit was solely dependent upon the total amount of assets the Company holds with UBS at any given point.  
Repayment of line of credit   $ 3,900