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v3.22.1

Summary of Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended |
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Mar. 31, 2022 | Sep. 17, 2018
Accounting Policies [Line Items] |  |
Date of incorporation | Apr. 06, 2018 |
Residential loans [Member] |  |
Accounting Policies [Line Items] |  |
Number of days past due for loans to be declared as deliquent | 180 days |
Consumer loans [Member] |  |
Accounting Policies [Line Items] |  |
Number of days past due for loans to be declared as deliquent | 120 days |
Stonebridge Bank [Member] |  |
Accounting Policies [Line Items] |  |
Business acquistion percentage of voting interests acquired |  | 100.00%

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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