Fair Value (Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$ 208,062
Investment securities	1,635,223
Mortgage loans held for sale	16,355	11,500
Impaired loans carried at fair value	61,266
Other loans	4,365,807
Loans receivable, net	4,443,428
Noninterest bearing checking accounts	1,034,952
Interest bearing transactions accounts	1,244,586
Savings accounts	997,603
Time deposits	1,546,889
Other	4,299
Total deposits	4,828,329
Short-term borrowings	240,602
Long-term debt	899,321
Subordinated debentures/notes	100,744
Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	448
Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	135
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	208,062	157,486
Investment securities	1,622,369	1,640,869
Accrued interest receivable		19,697
Mortgage loans held for sale	16,355	11,535
Impaired loans carried at fair value	61,266	67,882
Other loans	4,250,534	4,169,238
Loans receivable, net	4,328,155	4,248,655
Assets held-for-sale		382,462
Noninterest bearing checking accounts	1,034,952	995,733
Interest bearing transactions accounts	1,244,586	1,037,385
Savings accounts	997,603	931,526
Time deposits	1,541,535	1,499,105
Other	4,299	1,365
Total deposits	4,822,975	4,465,114
Short-term borrowings	240,602	263,594
Long-term debt	806,287	823,182
Subordinated debentures/notes	105,250	75,250
Accrued interest payable		4,916
Liabilities held for sale		536,186
Carrying Value [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	448	846
Carrying Value [Member] \| Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	135	700
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	208,062
Investment securities	1,398
Mortgage loans held for sale
Impaired loans carried at fair value
Other loans
Loans receivable, net
Noninterest bearing checking accounts	1,034,952
Interest bearing transactions accounts	1,244,586
Savings accounts	997,603
Time deposits
Other	4,299
Total deposits	3,281,440
Short-term borrowings
Long-term debt
Subordinated debentures/notes
Level 1 [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap
Level 1 [Member] \| Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments
Investment securities	1,633,087
Mortgage loans held for sale	16,355
Impaired loans carried at fair value
Other loans
Loans receivable, net	16,355
Noninterest bearing checking accounts
Interest bearing transactions accounts
Savings accounts
Time deposits	1,546,889
Other
Total deposits	1,546,889
Short-term borrowings	240,602
Long-term debt	899,321
Subordinated debentures/notes	100,744
Level 2 [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	448
Level 2 [Member] \| Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments
Investment securities	738
Mortgage loans held for sale
Impaired loans carried at fair value	61,266
Other loans	4,365,807
Loans receivable, net	4,427,073
Noninterest bearing checking accounts
Interest bearing transactions accounts
Savings accounts
Time deposits
Other
Total deposits
Short-term borrowings
Long-term debt
Subordinated debentures/notes
Level 3 [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap
Level 3 [Member] \| Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	135
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments		157,486
Investment securities		1,655,219
Accrued interest receivable		19,697
Mortgage loans held for sale		11,535
Impaired loans carried at fair value		67,882
Other loans		4,187,155
Loans receivable, net		4,266,572
Assets held-for-sale		382,462
Noninterest bearing checking accounts		995,733
Interest bearing transactions accounts		1,037,385
Savings accounts		931,526
Time deposits		1,506,075
Other		1,365
Total deposits		4,472,084
Short-term borrowings		263,594
Long-term debt		915,274
Subordinated debentures/notes		68,601
Accrued interest payable		4,916
Liabilities held for sale		536,991
Fair Value [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap		846
Fair Value [Member] \| Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap		700
Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	6,129
Securities [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	6,129
Securities [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable
Securities [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	6,129
Securities [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable
Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	14,091
Loans [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	14,091
Loans [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable
Loans [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	4
Loans [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	14,087
Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,527
Deposits [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,527
Deposits [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	35
Deposits [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,492
Deposits [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable
Debt/Borrowings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,133
Debt/Borrowings [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,133
Debt/Borrowings [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	23
Debt/Borrowings [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	2,110
Debt/Borrowings [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable

Accrued Interest Receivable At Fair Value

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- Definition

Impaired Loan Fair Value

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- Definition

Interest Bearing Deposit Liabilities Fair Value

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- Definition

Interest Bearing Domestic Deposit Savings Fair Value

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- Definition

Liabilities Held For Sale Fair Value Disclosure

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- Definition

Noninterest Bearing Deposit Liabilities 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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 33

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 8

-Footnote 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Paragraph 7, 8, 9, 10

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

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- Definition

Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

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-Name Accounting Standards Codification

-Topic 815

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- Definition

Amount of subordinated debt obligations (also known as subordinated loan, subordinated bond, subordinated debenture or junior debt) which has a priority ranking after other debts in a dissolution, measured at fair value.

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- Definition

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.

+ References

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-Number 210

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-Paragraph 3, 4

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-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Glossary Loan

-URI http://asc.fasb.org/extlink&oid=6517073

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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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