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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 01, 2023 USD ($) | Sep. 30, 2023 USD ($) Integer | May 19, 2023 | Dec. 31, 2022 USD ($) | May 03, 2007 Branches
Description Of Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Entity incorporation date of incorporation |  | Mar. 05, 2007 |  |  |
State in which the entity was incorporated |  | NJ |  |  |
Year of incorporation |  | 2007 |  |  |
Operations commencement date |  | Apr. 23, 2007 |  |  |
Number of branches owned by the entity | Branches |  |  |  |  | 29
Retained earnings accumulated deficit |  | $ 146,022 |  | $ 131,488 |
Number Of Employees | Integer |  | 212 |  |  |
Number Of Full Time Employees | Integer |  | 208 |  |  |
Noah Bank [Member] |  |  |  |  |
Description Of Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of outstanding common stock acquired |  |  | 100.00% |  |
Accounting Standard Pending Adoption [Member] | Accounting Standards Update 2019-05 [Member] |  |  |  |  |
Description Of Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Retained earnings accumulated deficit | $ 284 |  |  |  |
Financing receivable change in method credit loss expense reversal | 301 |  |  |  |
Accounting Standard Pending Adoption [Member] | Accounting Standards Update 2019-05 [Member] | SEC Schedule, 12-09, Reserve, off-Balance-Sheet Activity [Member] |  |  |  |  |
Description Of Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Reserve for unfunded liability | $ 695 |  |  |  |
New Jersey State Chartered Banking Institution [Member] |  |  |  |  |
Description Of Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
State in which the entity was incorporated |  | NJ |  |  |

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