XML 91 R108.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Employee Benefit Plans (Summary Of Current Allocation Percentages Of Plan Assets) (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Horizon Defined Benefit Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 100.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Percentage of Plan Assets | 100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember | 100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember
Horizon Defined Benefit Plan | Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 65.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Minimum | 40.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Maximum | 100.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Percentage of Plan Assets | 53.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember | 53.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember
Horizon Defined Benefit Plan | Debt Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 18.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Minimum | 20.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Maximum | 40.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Percentage of Plan Assets | 23.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember | 28.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember
Horizon Defined Benefit Plan | Cash and Cash Equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 2.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Minimum | 3.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Maximum | 10.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Percentage of Plan Assets | 9.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember | 7.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember
Horizon Defined Benefit Plan | Other Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 15.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = chco_OtherSecuritesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Minimum | 0.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = chco_OtherSecuritesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Allowable-Allocation Range, Maximum | 15.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = chco_OtherSecuritesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember |
Percentage of Plan Assets | 15.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = chco_OtherSecuritesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember | 12.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = chco_OtherSecuritesMember / us-gaap_MultiemployerPlanNameAxis = chco_HorizonDefinedBenefitPlanMemberMember
Community Defined Benefit Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 100.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Percentage of Plan Assets | 100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Community Defined Benefit Plan | Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 25.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Allowable-Allocation Range, Minimum | 20.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Allowable-Allocation Range, Maximum | 30.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Percentage of Plan Assets | 26.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Community Defined Benefit Plan | Debt Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 75.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Allowable-Allocation Range, Minimum | 70.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Allowable-Allocation Range, Maximum | 80.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |
Percentage of Plan Assets | 74.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_MultiemployerPlanNameAxis = chco_CommunityDefinedBenefitPlanMember |

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_MultiemployerPlanNameAxis=chco_CommunityDefinedBenefitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MultiemployerPlanNameAxis=chco_HorizonDefinedBenefitPlanMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |