XML 60 R40.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Investment Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract] |
Schedule of marketable securities | Investment securities at December 31, 2016 and December 31, 2015 were as follows:
(In thousands) |  | Amortized Cost |  | Gross Unrealized/Unrecognized Holding Gains |  | Gross Unrealized/Unrecognized Holding Losses |  | Estimated Fair Value
2016: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 270,000 |  |  | $ | — |  |  | $ | 2,467 |  |  | $ | 267,533 |
U.S. Government sponsored entities’ asset-backed securities |  | 991,642 |  |  | 5,372 |  |  | 9,842 |  |  | 987,172 |
Other equity securities |  | 1,119 |  |  | 2,315 |  |  | — |  |  | 3,434 |
Total |  | $ | 1,262,761 |  |  | $ | 7,687 |  |  | $ | 12,309 |  |  | $ | 1,258,139 |
2016: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 188,622 |  |  | $ | 977 |  |  | $ | 5,148 |  |  | $ | 184,451 |
U.S. Government sponsored entities’ asset-backed securities |  | 71,211 |  |  | 1,097 |  |  | 87 |  |  | 72,221 |
Total |  | $ | 259,833 |  |  | $ | 2,074 |  |  | $ | 5,235 |  |  | $ | 256,672 |
(In thousands) |  | Amortized Cost |  | Gross Unrealized/Unrecognized Holding Gains |  | Gross Unrealized/Unrecognized Holding Losses |  | Estimated Fair Value
2015: |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 527,605 |  |  | $ | — |  |  | $ | 5,542 |  |  | $ | 522,063 |
U.S. Government sponsored entities’ asset-backed securities |  | 907,989 |  |  | 8,776 |  |  | 5,272 |  |  | 911,493 |
Other equity securities |  | 1,120 |  |  | 1,590 |  |  | — |  |  | 2,710 |
Total |  | $ | 1,436,714 |  |  | $ | 10,366 |  |  | $ | 10,814 |  |  | $ | 1,436,266 |
2015: |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 48,190 |  |  | $ | 734 |  |  | $ | — |  |  | $ | 48,924 |
U.S. Government sponsored entities’ asset-backed securities |  | 101,112 |  |  | 1,526 |  |  | 134 |  |  | 102,504 |
Total |  | $ | 149,302 |  |  | $ | 2,260 |  |  | $ | 134 |  |  | $ | 151,428 |
Schedule of unrealized loss on investments | The following table provides detail on investment securities with unrealized losses aggregated by investment category and length of time the individual securities had been in a continuous loss position at December 31, 2016 and December 31, 2015:
|  | Less than 12 Months |  | 12 Months or Longer |  | Total
(In thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
2016: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 247,695 |  |  | $ | 2,305 |  |  | $ | 19,838 |  |  | $ | 162 |  |  | $ | 267,533 |  |  | $ | 2,467 |
U.S. Government sponsored entities' asset-backed securities |  | 612,321 |  |  | 9,473 |  |  | 27,325 |  |  | 369 |  |  | 639,646 |  |  | 9,842 |
Total |  | $ | 860,016 |  |  | $ | 11,778 |  |  | $ | 47,163 |  |  | $ | 531 |  |  | $ | 907,179 |  |  | $ | 12,309 |
2016: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 134,909 |  |  | $ | 5,148 |  |  | $ | — |  |  | $ | — |  |  | $ | 134,909 |  |  | $ | 5,148 |
U.S. Government sponsored entities’ asset-backed securities |  | — |  |  | — |  |  | 7,564 |  |  | 87 |  |  | 7,564 |  |  | 87 |
Total |  | $ | 134,909 |  |  | $ | 5,148 |  |  | $ | 7,564 |  |  | $ | 87 |  |  | $ | 142,473 |  |  | $ | 5,235 |
|  | Less than 12 Months |  | 12 Months or Longer |  | Total
(In thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
2015: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 326,973 |  |  | $ | 2,117 |  |  | $ | 195,090 |  |  | $ | 3,425 |  |  | $ | 522,063 |  |  | $ | 5,542 |
U.S. Government sponsored entities' asset-backed securities |  | 384,169 |  |  | 2,776 |  |  | 114,543 |  |  | 2,496 |  |  | 498,712 |  |  | 5,272 |
Total |  | $ | 711,142 |  |  | $ | 4,893 |  |  | $ | 309,633 |  |  | $ | 5,921 |  |  | $ | 1,020,775 |  |  | $ | 10,814 |
2015: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities' asset-backed securities |  | $ | 5,656 |  |  | $ | 10 |  |  | $ | 7,792 |  |  | $ | 124 |  |  | $ | 13,448 |  |  | $ | 134 |
Schedule of contractual maturity of debt securities | The amortized cost and estimated fair value of investments in debt securities at December 31, 2016, are shown in the following table by contractual maturity, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing in principal repayments.
(In thousands) |  | Amortized Cost |  | Estimated Fair Value |  | Tax Equivalent Yield (1)
Securities Available-for-Sale |  |  |  |  |  |
U.S. Treasury and other U.S. Government sponsored entities’ notes: |  |  |  |  |  |
Due within one year |  | $ | 25,000 |  |  | $ | 24,933 |  |  | 0.87 | %
Due one through five years |  | 245,000 |  |  | 242,600 |  |  | 1.22 | %
Total |  | $ | 270,000 |  |  | $ | 267,533 |  |  | 1.18 | %
U.S. Government sponsored entities’ asset-backed securities |  | $ | 991,642 |  |  | $ | 987,172 |  |  | 2.10 | %
Securities Held-to-Maturity |  |  |  |  |  |
Obligations of states and political subdivisions |  |  |  |  |  |
Due greater than ten years |  | $ | 188,622 |  |  | $ | 184,451 |  |  | 4.50 | %
Total |  | $ | 188,622 |  |  | $ | 184,451 |  |  | 4.50 | %
U.S. Government sponsored entities’ asset-backed securities |  | $ | 71,211 |  |  | $ | 72,221 |  |  | 3.31 | %

X
- Definition Schedule Of Contractual Maturity Of Debt Securities Table Text Block + References No definition available. + Details
Name: | prk_ScheduleOfContractualMaturityOfDebtSecuritiesTableTextBlock
Namespace Prefix: | prk_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
Name: | us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration