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Fair Value Measurement (Fair Value, by Balance Sheet Grouping) (Details) - USD ($)		Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale investment securities		$ 5,015,000	$ 5,748,000
Held-to-maturity investment securities		155,680,000	132,794,000
Equity securities		505,000	515,000
Net loans and leases		213,878,000	276,701,000
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		754,942,000	303,724,000
Available-for-sale investment securities		5,015,000	5,748,000
Held-to-maturity investment securities		152,791,000	128,292,000
Equity securities		505,000	515,000
Loans held for sale		23,154,000	25,506,000
Net loans and leases		2,356,196,000	2,370,659,000
Restricted investment in bank stocks		7,906,000	7,594,000
Accrued interest receivable		10,008,000	3,619,000
Net Amounts Presented in the Consolidated Balance Sheets			489,000
Mortgage banking derivative assets		353,000
Deposits		2,961,881,000	2,474,580,000
Short-term borrowings			125,617,000
Long-term debt	[1]	71,456,000	71,648,000
Subordinated debt		44,599,000	44,580,000
Accrued interest payable		1,901,000	2,007,000
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		754,942,000	303,724,000
Available-for-sale investment securities		5,015,000	5,748,000
Held-to-maturity investment securities		155,680,000	132,794,000
Equity securities		505,000	515,000
Loans held for sale		23,436,000	26,262,000
Net loans and leases		2,439,640,000	2,444,105,000
Restricted investment in bank stocks		7,906,000	7,594,000
Accrued interest receivable		10,008,000	3,619,000
Net Amounts Presented in the Consolidated Balance Sheets			489,000
Mortgage banking derivative assets		353,000
Deposits		2,964,309,000	2,496,799,000
Short-term borrowings			125,617,000
Long-term debt	[1]	71,347,000	70,498,000
Subordinated debt		46,218,000	43,098,000
Accrued interest payable		$ 1,901,000	$ 2,007,000
[1] Long-term debt excludes finance lease obligations.

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Accrued interest receivable fair value disclosure.

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Fair value portion of accrued expenses.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Fair value portion of mortgage loans held-for-sale.

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