Servicing Assets, Fair Value Disclosure

No definition available.

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Namespace Prefix:	cac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 55
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

+ Details

Name:	us-gaap_DepositsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI https://asc.fasb.org/subtopic&trid=2196772

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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Fair Value (Carrying Amounts and Estimated Fair Value for Financial Instrument Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial assets:
Debt Securities, Held-to-maturity, Fair Value	$ 506,193	$ 1,380
HTM debt securities	546,583	1,291
Servicing Assets, Fair Value Disclosure	4,412	3,310
Servicing Asset at Fair Value, Amount	4,412	3,310	$ 2,447	$ 1,496
Financial liabilities:
Time deposits	291,568	409,264
Short-term Debt, Fair Value	264,779	211,586
Subordinated debentures	31,032	33,248
Readily Available Market Prices (Level 1) [Member]
Financial assets:
Debt Securities, Held-to-maturity, Fair Value	0	0
Servicing Assets, Fair Value Disclosure	0	0
Financial liabilities:
Time deposits	0	0
Short-term Debt, Fair Value	0	0
Subordinated debentures	0	0
Observable Market Data (Level 2) [Member]
Financial assets:
Debt Securities, Held-to-maturity, Fair Value	506,193	1,380
Servicing Assets, Fair Value Disclosure	0	0
Financial liabilities:
Time deposits	291,568	409,264
Short-term Debt, Fair Value	264,779	211,586
Subordinated debentures	31,032	33,248
Company Determined Fair Value (Level 3) [Member]
Financial assets:
Debt Securities, Held-to-maturity, Fair Value	0	0
Servicing Assets, Fair Value Disclosure	4,412	3,310
Financial liabilities:
Time deposits	0	0
Short-term Debt, Fair Value	0	0
Subordinated debentures	0	0
Carrying Amount [Member]
Financial assets:
HTM debt securities	546,583	1,291
Servicing Assets, Fair Value Disclosure	2,458	2,471
Financial liabilities:
Time deposits	300,451	409,668
Short-term Debt, Fair Value	265,176	211,608
Subordinated debentures	44,331	44,331
Residential real estate
Financial assets:
Loans receivable, net of allowance	1,494,707	1,297,592
Residential real estate \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Residential real estate \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Residential real estate \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	1,494,707	1,297,592
Residential real estate \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	1,691,177	1,300,314
Commercial real estate
Financial assets:
Loans receivable, net of allowance	1,550,379	1,435,794
Commercial real estate \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Commercial real estate \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Commercial real estate \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	1,550,379	1,435,794
Commercial real estate \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	1,605,279	1,474,087
Commercial
Financial assets:
Loans receivable, net of allowance	413,706	356,463
Commercial \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Commercial \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Commercial \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	413,706	356,463
Commercial \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	424,054	359,512
Home equity
Financial assets:
Loans receivable, net of allowance	237,967	205,920
Home equity \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Home equity \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Home equity \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	237,967	205,920
Home equity \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	232,203	208,934
Consumer
Financial assets:
Loans receivable, net of allowance	17,853	17,551
Consumer \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Consumer \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
Consumer \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	17,853	17,551
Consumer \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	20,087	19,437
SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance	647	37,133
SBA PPP Portfolio Segment \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
SBA PPP Portfolio Segment \| Observable Market Data (Level 2) [Member]
Financial assets:
Loans receivable, net of allowance	0	0
SBA PPP Portfolio Segment \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Loans receivable, net of allowance	647	37,133
SBA PPP Portfolio Segment \| Carrying Amount [Member]
Financial assets:
Loans receivable, net of allowance	631	35,934
Fixed Rate mortgage interest rate lock commitments \| Fair Value, Measurements, Recurring [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	31	371
Fixed Rate mortgage interest rate lock commitments \| Fair Value, Measurements, Recurring [Member] \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0	0
Fixed Rate mortgage interest rate lock commitments \| Fair Value, Measurements, Recurring [Member] \| Observable Market Data (Level 2) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	31	371
Fixed Rate mortgage interest rate lock commitments \| Fair Value, Measurements, Recurring [Member] \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0	0
Forward delivery commitments \| Fair Value, Measurements, Recurring [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	114	86
Forward delivery commitments \| Fair Value, Measurements, Recurring [Member] \| Readily Available Market Prices (Level 1) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0
Forward delivery commitments \| Fair Value, Measurements, Recurring [Member] \| Observable Market Data (Level 2) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	114	$ 86
Forward delivery commitments \| Fair Value, Measurements, Recurring [Member] \| Company Determined Fair Value (Level 3) [Member]
Financial assets:
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	$ 0