Borrowed Funds (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Repurchase agreements secured by available for sale securities	$ 209,800,000	$ 158,700,000
FHLB advances secured by loans receivable	$ 198,797,000
Borrowing capacity to assets, percentage	30.00%
FHLB, available funds	$ 544,100,000	520,100,000
FHLB available credit	195,300,000
Repayments of long-term debt		70,000,000
Aggregated liquidation amount	$ 67,000	66,000
Maximum Allowable Period Of Interest Deferment	20
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Repayments of long-term debt		70,000,000.0
Prepayment penalty fee		2,400,000
Securities Sold under Agreements to Repurchase [Member]
Debt Instrument [Line Items]
Repurchase agreements secured by available for sale securities	$ 74,600,000	69,300,000
Various Financial Institutions [Member]
Debt Instrument [Line Items]
Line of credit facility, available funding	140,000,000.0
Outstanding borrowings	0	$ 0
Federal Reserve Bank [Member]
Debt Instrument [Line Items]
Line of credit facility, available funding	9,600,000
First United Statutory Trust I And II [Member]
Debt Instrument [Line Items]
Aggregated liquidation amount	$ 900,000
Debenture issue date	March 2004
Trust preferred securities	$ 30,000,000.0
First United Statutory Trust I [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Variable interest rate	three-month LIBOR plus 275 basis points
Reporting date interest rate	7.49%
Debenture issued to unconsolidated subsidiary	$ 20,600,000
Earliest availability for redemption	5 years
Maturity date	2034
First United Statutory Trust II [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Variable interest rate	three-month LIBOR plus 275 basis points
Reporting date interest rate	7.49%
Debenture issued to unconsolidated subsidiary	$ 10,300,000
Earliest availability for redemption	5 years
Maturity date	2034

Borrowing capacity to assets, percentage.

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- Definition

Date when the debt instrument was issued, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

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No definition available.

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Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc)

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No definition available.

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Debt Instrument Redemption After First Issuance

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Maximum Allowable Period Of Interest Deferment

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Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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Description of reference rate used for variable rate of debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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.

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Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders.

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