XML 45 R36.htm IDEA: XBRL DOCUMENT
v3.23.2

Investments - FHLB Stock (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Investments, Debt and Equity Securities [Abstract] |  |
FHLB stock to be held as percentage of membership asset value | 1.00% |
FHLB stock to be held as percentage of FHLB advances outstanding | 2.70% |
Investment in Federal Home Loan Bank (FHLB) stock, at cost | $ 476 | $ 449

X
- Definition Percentage of federal home loan bank advances outstanding to be held by members in FHLB stock. + References No definition available. + Details
Name: | finw_PercentageOfFederalHomeLoanBankAdvancesOutstanding
Namespace Prefix: | finw_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of federal home loan bank membership asset value to be held by members in FHLB stock. + References No definition available. + Details
Name: | finw_PercentageOfFederalHomeLoanBankMembershipAssetValue
Namespace Prefix: | finw_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 325 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481026/942-325-45-1 + Details
Name: | us-gaap_FederalHomeLoanBankStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration