Fair Value (Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$ 187,479	$ 167,214
Investment securities	1,357,610	1,354,843
Federal Home Loan Bank Stock	37,983	43,388
Federal Reserve Bank Stock	10,811	8,225
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Impaired Loan Fair Value	5,462	6,399
Other loans	5,622,367	5,570,136
Loans receivable, net	5,632,280	5,580,780
Time deposits	985,542	1,044,620
Other	2,633	1,267
Total deposits	988,175	1,045,887
Short-term borrowings	212,569	221,966
Long-term debt	377,428	400,203
Subordinated debentures/notes	12,791	12,959
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	261
Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,769	1,649
Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	187,479	167,214
Investment securities	1,349,149	1,355,229
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Derivative Assets	175	87
Impaired Loan Fair Value	5,462	6,399
Other loans	5,677,479	5,629,976
Loans receivable, net	5,687,392	5,640,620
Time deposits	982,983	1,043,177
Other	2,633	1,267
Total deposits	985,616	1,044,444
Short-term borrowings	212,569	221,966
Long-term debt	375,000	400,000
Subordinated debentures/notes	15,000	15,000
Reported Value Measurement [Member] \| Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,769	1,649
Reported Value Measurement [Member] \| Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	175	87
Impaired Loan Fair Value		6,399
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	187,479	167,214
Derivative Assets	0	0
Other	2,633	1,267
Total deposits	2,633	1,267
Fair Value, Inputs, Level 1 [Member] \| Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,336	1,225
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,357,610	1,354,843
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Derivative Assets	175	87
Loans receivable, net	4,451	4,245
Time deposits	985,542	1,044,620
Total deposits	985,542	1,044,620
Short-term borrowings	212,569	221,966
Long-term debt	377,428	400,203
Subordinated debentures/notes	12,791	12,959
Fair Value, Inputs, Level 2 [Member] \| Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	261
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0	0
Impaired Loan Fair Value	5,462	6,399
Other loans	5,622,367	5,570,136
Loans receivable, net	5,627,829	5,576,535
Fair Value, Inputs, Level 3 [Member] \| Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	433	424
Fair Value, Inputs, Level 3 [Member] \| Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	$ 226	$ 226

Impaired Loan Fair Value

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- Definition

Short Term Borrowings Fair Value

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- Definition

Time Deposits Fair Value

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- Definition

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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Fair value, after the effects of master netting arrangements, of a financial liability or 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 liabilities not subject to a master netting arrangement and not elected to be offset.

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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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- Definition

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

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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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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- Definition

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 other assets.

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Fair value portion of other liabilities.

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Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.

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