XML 77 R66.htm IDEA: XBRL DOCUMENT
v3.24.3

REGULATORY CAPITAL REQUIREMENTS (Details) $ in Thousands | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Banking Regulation, Total Capital, Actual | $ 597,708 | $ 577,440
Banking Regulation, Total Risk-Based Capital Ratio, Actual | 0.1485 | 0.1436
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.1050 | 0.1050
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum | 0.1000 | 0.1000
Banking Regulation, Tier One Risk-Based Capital, Actual | $ 559,552 | $ 538,153
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual | 0.1390 | 0.1338
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.0850 | 0.0850
Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum | 0.0600 | 0.0600
Common equity tier I capital | $ 516,552 | $ 495,153
Common Equity Tier I Risk Based Capital Ratio | 12.83% | 12.31%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets | 7.00% | 7.00%
Banking Regulation, Tier One Leverage Capital, Actual | $ 559,552 | $ 538,153
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual | 0.0984 | 0.0940
Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum | 0.0400 | 0.0400
Subsidiaries |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Banking Regulation, Total Capital, Actual | $ 569,146 | $ 549,221
Banking Regulation, Total Risk-Based Capital Ratio, Actual | 0.1419 | 0.1370
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.1050 | 0.1050
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum | 0.1000 | 0.1000
Banking Regulation, Tier One Risk-Based Capital, Actual | $ 530,990 | $ 509,934
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual | 0.1324 | 0.1272
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.0850 | 0.0850
Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum | 0.0800 | 0.0800
Common equity tier I capital | $ 530,990 | $ 509,934
Common Equity Tier I Risk Based Capital Ratio | 13.24% | 12.72%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets | 7.00% | 7.00%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 6.50% | 6.50%
Banking Regulation, Tier One Leverage Capital, Actual | $ 530,990 | $ 509,934
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual | 0.0935 | 0.0891
Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum | 0.0400 | 0.0400
Banking Regulation, Tier One Leverage Capital Ratio, Well Capitalized, Minimum | 0.0500 | 0.0500

X
- Definition Common Equity Tier I To Total Risk Weighted Assets Capital Ratio + References No definition available. + Details
Name: | cac_CommonEquityTierIRiskBasedCapitalRatio
Namespace Prefix: | cac_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets + References No definition available. + Details
Name: | cac_CommonEquityTierOneRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets
Namespace Prefix: | cac_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets + References No definition available. + Details
Name: | cac_CommonEquityTierOneRiskBasedCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssets
Namespace Prefix: | cac_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common equity tier I capital + References No definition available. + Details
Name: | cac_CommonequitytierIcapital
Namespace Prefix: | cac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tier One Risk Based Capital Required For Capital Adequacy With Buffer To Risk Weighted Assets + References No definition available. + Details
Name: | cac_TierOneRiskBasedCapitalRequiredForCapitalAdequacyWithBufferToRiskWeightedAssets
Namespace Prefix: | cac_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of total capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_Capital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
Name: | us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_CapitalToRiskWeightedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio of Tier 1 leverage capital to average assets exceeding minimum required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_ExcessTierOneLeverageCapitalToAverageAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of Tier 1 leverage capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_TierOneLeverageCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
Name: | us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of Tier 1 risk-based capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_TierOneRiskBasedCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Ratio of minimum Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
Name: | us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |