XML 47 R38.htm IDEA: XBRL DOCUMENT
v3.23.2

Loans and Allowance for Credit Losses - Narrative (Details) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 loan | Jun. 30, 2022 USD ($) loan | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |
Commitments to lend | $ |  |  |  | $ 0
Number of principal charge-offs related to TDRs | loan | 0 | 1 |  |
Charge-offs related to TDRs | $ |  | $ 10,000.00 |  |
Number of new loans modification | loan | 0 | 0 |  |
Number of restructured loans | loan |  | 1 |  |
Strategic Program loans |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |
Cash held in reserve by strategic programs | $ |  |  | $ 29,800,000 | $ 16,600,000

X
- Definition Number of loan charge-offs recorded related to TDRs during the period. + References No definition available. + Details
Name: | finw_FinancingReceivableModificationsNumberOfLoansChargeOff
Namespace Prefix: | finw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified new by troubled debt restructurings. + References No definition available. + Details
Name: | finw_FinancingReceivableNumberOfNewLoanModification
Namespace Prefix: | finw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been restructured loans incurred by troubled debt restructurings. + References No definition available. + Details
Name: | finw_FinancingReceivableNumberOfRestructuredLoansIncurred
Namespace Prefix: | finw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 210 -Topic 942 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481281/942-210-50-1 + Details
Name: | us-gaap_CashReserveDepositRequiredAndMade
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 310 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481746/310-40-50-4 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of commitment to lend additional funds to debtor experiencing financial difficulty for which creditor has modified terms of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 36 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-36 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 40 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481746/310-40-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=finw_StrategicProgramLoansPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |