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Loans (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans net of deferred origination fees, costs and unearned income | $ 6,800,000 | $ 6,700,000 |
Overdrawn deposit account reclassified to loans | 3,600,000 | 2,600,000 |
Partial charge-offs on impaired loans | 103,800,000 | 53,600,000 |
Recorded investment, related to loans | 52,700,000 | 162,300,000 |
Average balance of financing receivable, individually evaluated for impairment | 214,000,000 | 210,400,000 | 184,700,000
Recognized net reversal to interest income |  | (1,300,000) | (1,300,000)
TDRs included in nonaccrual loan totals | 100,400,000 | 80,700,000 |
TDRs included in accruing loan totals | 28,700,000 |  |
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR | 4,000,000 | 434,000 |
Nonaccrual TDRs considered current | 79,900,000 | 50,300,000 |
Specific reserves related to troubled debt restructuring | 9,100,000 | 9,400,000 |
Other real estate owned | 42,300,000 | 41,700,000 |
Recorded investment | 187,135,000 | 250,933,000 |
New loan made to executive officers and directors | 4,900,000 | 2,100,000 |
Repayment of loan | 5,500,000 | 5,300,000 |
Park National Bank [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Recognized net reversal to interest income |  | 948,000,000 | 1,800,000
Vision Bank [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Recognized net reversal to interest income |  | (2,200,000) | (3,100,000)
With No Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Partial charge-offs on impaired loans | 83,700,000 | 12,000,000 |
With An Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Partial charge-offs on impaired loans | 20,100,000 | 41,600,000 |
Allowance For Loans And Leases Receivable [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Allowance for loans individually evaluated for impairment | 15,900,000 | 66,900,000 |
Consumer [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Modified consumer loans | 19,600,000 |  |
Consumer [Member] | With No Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Recorded investment |  |  |
Consumer [Member] | With An Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Recorded investment | 20,000 |  |
Commercial [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Modified substandard commercial loans, total recorded investment | 13,600,000 |  |
Executive Officers And Directors [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Recorded investment | $ 53,000,000 | $ 53,600,000 |

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- Definition Amount of deposits held by the entity that have been reclassified as loan balances receivable, such as overdrafts receivable, at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph e -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479006&loc=d3e64164-112818 + Details
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