XML 34 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans (Summary of Recorded Investment of Consumer Loans by Risk Rating Categories) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total $ 2,620,943us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer $ 2,604,206us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer $ 2,166,636us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 1,117,445us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember		 1,110,390us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember		 962,009us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 844,066us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember		 829,570us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember		 675,412us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 659,432us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember		 664,246us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember		 529,215us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
Originated Loans [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 2,411,222us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 2,386,475us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 2,124,455us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
Originated Loans [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 1,007,572us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 998,001us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 950,801us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
Originated Loans [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 835,359us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 819,378us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 673,790us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
Originated Loans [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 568,291us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 569,096us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember		 499,864us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
Originated Loans [Member] | Performing [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 2,399,114us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 2,372,503us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 2,108,148us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Originated Loans [Member] | Performing [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 998,196us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 987,542us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 937,968us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Originated Loans [Member] | Performing [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 834,926us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 818,878us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 672,984us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Originated Loans [Member] | Performing [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 565,992us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 566,083us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 497,196us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Originated Loans [Member] | Nonperforming [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 12,108us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 13,972us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 16,307us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Originated Loans [Member] | Nonperforming [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 9,376us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 10,459us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 12,833us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Originated Loans [Member] | Nonperforming [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 433us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 500us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 806us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Originated Loans [Member] | Nonperforming [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 2,299us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 3,013us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 2,668us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_OriginatedPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Acquired Loans [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 209,721us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 217,731us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 42,181us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
Acquired Loans [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 109,873us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 112,389us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 11,208us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
Acquired Loans [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 8,707us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 10,192us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 1,622us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
Acquired Loans [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 91,141us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 95,150us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember		 29,351us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
Acquired Loans [Member] | Performing [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 208,387us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 215,971us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 41,792us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Acquired Loans [Member] | Performing [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 109,005us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 111,101us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 11,150us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Acquired Loans [Member] | Performing [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 8,696us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 10,174us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 1,622us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Acquired Loans [Member] | Performing [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 90,686us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 94,696us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember		 29,020us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
Acquired Loans [Member] | Nonperforming [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 1,334us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 1,760us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 389us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Acquired Loans [Member] | Nonperforming [Member] | Real estate residential [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 868us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 1,288us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 58us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_RealEstateResidentialLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Acquired Loans [Member] | Nonperforming [Member] | Consumer installment [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total 11us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 18us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_ConsumerInstallmentLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
Acquired Loans [Member] | Nonperforming [Member] | Home equity [Member]      
Recorded investment of loans in consumer loan portfolio based on credit risk profile of loans in performing and nonperforming status      
Recorded investment (loan balance), Consumer, Total $ 455us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 $ 454us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember		 $ 331us-gaap_LoansAndLeasesReceivableGrossCarryingAmountConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= chfc_HomeEquityLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfc_AcquiredPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember