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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		Dec. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		$ 1,178,515	$ 628,059
Securities held to maturity, fair value		209,820	282,035
Carrying Amount [Member] | Level 1 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents		79,112	93,878
Accrued interest receivable		15,482	15,635
Non-maturity deposits		3,905,136	3,392,774
Short-term borrowings		30,000	5,300
Accrued interest payable		2,147	4,381
Carrying Amount [Member] | Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		1,178,515	628,059
Securities held to maturity, fair value		205,581	271,973
Loans held for sale		6,202	4,305
Loans		3,606,276	3,513,284
FHLB and FRB stock		10,770	8,619
Time deposits		921,954	885,593
Long-term borrowings		73,911	73,623
Carrying Amount [Member] | Level 2 Inputs [Member] | Cash Flow Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		1,559
Derivative instruments, liabilities		0	311
Carrying Amount [Member] | Level 2 Inputs [Member] | Interest Rate Products [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		14,702	19,626
Derivative instruments, liabilities		14,708	19,837
Carrying Amount [Member] | Level 2 Inputs [Member] | Credit Contract [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		0	23
Derivative instruments, liabilities		1	86
Carrying Amount [Member] | Level 2 Inputs [Member] | Mortgage Banking [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		243	471
Derivative instruments, liabilities		4	1
Carrying Amount [Member] | Level 3 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans	[1]	33,484	29,434
Long-lived assets held for sale		2,560
Estimated Fair Value [Member] | Level 1 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents		79,112	93,878
Accrued interest receivable		15,482	15,635
Non-maturity deposits		3,905,136	3,392,774
Short-term borrowings		30,000	5,300
Accrued interest payable		2,147	4,381
Estimated Fair Value [Member] | Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Securities available for sale		1,178,515	628,059
Securities held to maturity, fair value		209,820	282,035
Loans held for sale		6,202	4,305
Loans		3,642,351	3,549,770
FHLB and FRB stock		10,770	8,619
Time deposits		920,699	887,113
Long-term borrowings		77,792	83,953
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Cash Flow Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		1,559
Derivative instruments, liabilities		0	311
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		14,702	19,626
Derivative instruments, liabilities		14,708	19,837
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Credit Contract [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		0	23
Derivative instruments, liabilities		1	86
Estimated Fair Value [Member] | Level 2 Inputs [Member] | Mortgage Banking [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative instruments, assets		243	471
Derivative instruments, liabilities		4	1
Estimated Fair Value [Member] | Level 3 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans	[1]	33,484	$ 29,434
Long-lived assets held for sale		$ 2,560
[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 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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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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