Concentration of Credit Risk - Additional Information (Detail) $ in Millions |
Sep. 30, 2022
USD ($)
|
|---|---|
| Concentration Risk [Line Items] | |
| Deposit amount exceeding the FDIC insurance limit | $ 4.0 |
| First American Retail Prime Obligation Money Market Fund [Member] | |
| Concentration Risk [Line Items] | |
| Uninsured amount of cash and cash equivalents | $ 54.1 |