XML 63 R36.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Pension Plan (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2011
Pension Plan [Abstract] |
Components Of Net Periodic Benefit Expense |
(in thousands) |  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Service cost |  | $ | 1,139 |  |  | $ | 918 |  |  | $ | 3,417 |  |  | $ | 2,754 |
Interest cost |  |  | 992 |  |  |  | 895 |  |  |  | 2,976 |  |  |  | 2,687 |
Expected return on plan assets |  |  | (1,885 | ) |  |  | (1,476 | ) |  |  | (5,657 | ) |  |  | (4,390 | )
Amortization of prior service cost |  |  | 5 |  |  |  | 6 |  |  |  | 15 |  |  |  | 16 |
Recognized net actuarial loss |  |  | 352 |  |  |  | 269 |  |  |  | 1,057 |  |  |  | 809 |
Benefit expense |  | $ | 603 |  |  | $ | 612 |  |  | $ | 1,808 |  |  | $ | 1,876 |

X
- Details
Name: | prk_PensionPlanAbstract
Namespace Prefix: | prk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration