XML 76 R67.htm IDEA: XBRL DOCUMENT
v3.23.1

Borrowings - Schedule of Available Unused Lines of Credit (Details) - Unused lines of Credit [Member] - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Correspondent Banks [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Collateral Requirements |  | None |
Available lines of credit |  | $ 28.0 | $ 45.0
FHLB Advances [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Collateral Requirements | [1] | Subject to collateral |
Available lines of credit | [1] | $ 243.4 | $ 246.8
Federal Reserve [Member] |  |  |
Short Term Debt [Line Items] |  |  |
Collateral Requirements | [2] | Subject to collateral |
[1] | These amounts represent the total remaining credit the Company has from the FHLB, but this credit can only be utilized to the extent that underlying collateral exists. The total lendable collateral value of assets pledged (including loans and investment securities) associated with FHLB advances and letters of credit totaled $74.2 million and $68.2 million as of March 31, 2023 and December 31, 2022, respectively. The Company’s collateral exposure with the FHLB in the form of advances and letters of credit was $55.0 million and $50.0 million as of March 31, 2023 and December 31, 2022, respectively, leaving an excess of collateral of $19.2 million and $18.2 million, respectively, available to utilize for additional credit as of the respective dates. The Company also has the ability to pledge additional assets to increase the availability of borrowings.
[2] | The Company has access to the Federal Reserve’s discount window and its Bank Term Funding Program (BTFP), the latter of which was established during the three months ended March 31, 2023 in response to the liquidity events that have occurred in the banking industry. Both the discount window and the BTFP allow borrowing on pledged collateral that includes eligible investment securities and, in certain circumstances, eligible loans. The discount window allows borrowing under 90-day terms, while borrowing terms under the BTFP are up to one year. The BTFP also allows investment securities to be pledged as collateral at 100% of par value when par value is greater than fair value.

X
- Definition Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22 (b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
Name: | us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Describes the collateral pledged in support of Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 + Details
Name: | us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresDescriptionOfCollateralPledged
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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_ShortTermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_UnusedLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=fusb_CorrespondentBanksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_FederalHomeLoanBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_FederalReserveBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |