XML 45 R34.htm IDEA: XBRL DOCUMENT
v3.20.2

Recent Accounting Pronouncements (Details) - Scenario, Forecast | 12 Months Ended
--- | ---
Dec. 31, 2020
Minimum |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Allowance for credit loss, percentage increase | 20.00%
Maximum |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Allowance for credit loss, percentage increase | 30.00%

X
- Definition Allowance for Credit Loss, Percentage Increase + References No definition available. + Details
Name: | ccne_AllowanceForCreditLossPercentageIncrease
Namespace Prefix: | ccne_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |