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Fair Value Measurements (Carrying Amount, Estimated Fair Value, and Placement in Fair Value Hierarchy of Financial Instruments) (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		$ 945,442	$ 954,371
Securities held to maturity, fair value		167,812	174,188
Carrying Amount [Member] | Level 1 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents		139,974	130,466
Accrued interest receivable		20,167	19,371
Non-maturity deposits		3,669,925	3,646,552
Short-term borrowings		116,000	205,000
Accrued interest payable		12,693	5,983
Carrying Amount [Member] | Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		945,442	954,371
Securities held to maturity, fair value		180,052	188,975
Loans held for sale		682	550
Loans		4,175,745	3,983,582
FHLB and FRB stock		17,630	19,385
Time deposits		1,471,382	1,282,872
Long-term borrowings		124,299	74,222
Carrying Amount [Member] | Level 2 Inputs [Member] | Cash Flow Hedge of Interest Rate Risk [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		5,972	6,725
Carrying Amount [Member] | Level 2 Inputs [Member] | Interest Rate Products [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		36,784	47,736
Derivative instruments, liabilities		36,788	47,738
Carrying Amount [Member] | Level 2 Inputs [Member] | Credit Contract [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, liabilities		0	0
Carrying Amount [Member] | Level 2 Inputs [Member] | Mortgage Banking [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		93	96
Derivative instruments, liabilities		21	13
Carrying Amount [Member] | Level 3 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans	[1]	20,059	21,454
Long-lived assets held for sale		1,509	1,509
Estimated Fair Value [Member] | Level 1 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents		139,974	130,466
Accrued interest receivable		20,167	19,371
Non-maturity deposits		3,669,925	3,646,552
Short-term borrowings		116,000	205,000
Accrued interest payable		12,693	5,983
Estimated Fair Value [Member] | Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		945,442	954,371
Securities held to maturity, fair value		167,812	174,188
Loans held for sale		682	550
Loans		4,069,579	3,867,285
FHLB and FRB stock		17,630	19,385
Time deposits		1,460,737	1,268,957
Long-term borrowings		121,042	70,814
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Cash Flow Hedge of Interest Rate Risk [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		5,972	6,725
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Interest Rate Products [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		36,784	47,736
Derivative instruments, liabilities		36,788	47,738
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Credit Contract [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, liabilities		0	0
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Mortgage Banking [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		93	96
Derivative instruments, liabilities		21	13
Estimated Fair Value [Member] | Level 3 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans	[1]	20,059	21,454
Long-lived assets held for sale		$ 1,509	$ 1,509
[1] Comprised of collateral dependent loans.

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Fair value portion of liabilities incurred for goods and services received that are used in an entity's business and related party payables.

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Fair value portion of assets classified as held for sale.

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Amount of 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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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 Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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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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