v3.22.0.1
Restatement of previously issued financial statements - Additional Information (Detail) - USD ($)
Sep. 18, 2020
Dec. 31, 2020
Sep. 30, 2020
Restatement of Previously Issued Financial Statements [Line Items]      
Banking Regulation, Mortgage Banking, Net Worth, Minimum $ 5,000,001 $ 5,000,001  
Additional paid-in capital   0  
Accumulated deficit   (9,880,718)  
Restatement Adjustment [Member]      
Restatement of Previously Issued Financial Statements [Line Items]      
Additional paid-in capital (5,235,337) (2,691,433) $ (3,818,317)
Accumulated deficit $ (12,182,968) $ (12,188,968) $ (12,188,968)
Reclassification of common stock from permanent equity to temporary equity 1,741,848