Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule of Compliance with Regulatory Capital Requirements

The following table presents the Company and Bank's regulatory capital ratios at the periods indicated:

	December 31, 2020				Minimum Regulatory Capital Required for Capital Adequacy plus Capital Conservation Buffer		Minimum Regulatory Provision To Be "Well Capitalized"		December 31, 2019				Minimum Regulatory Capital Required For Capital Adequacy plus Capital Conservation Buffer		Minimum Regulatory Provision To Be "Well Capitalized"
	Amount		Ratio						Amount		Ratio
Camden National Corporation:
Total risk-based capital ratio	$	498,290	15.40	%	10.50	%	10.00	%	$	455,702	14.44	%	10.50	%	10.00	%
Tier 1 risk-based capital ratio	445,858		13.78	%	8.50	%	6.00	%	415,511		13.16	%	8.50	%	6.00	%
Common equity Tier 1 risk-based capital ratio(1)	402,858		12.45	%	7.00	%	N/A		372,511		11.80	%	7.00	%	N/A
Tier 1 leverage capital ratio(1)	445,858		9.13	%	4.00	%	N/A		415,511		9.55	%	4.00	%	N/A
Camden National Bank:
Total risk-based capital ratio	$	460,611	14.28	%	10.50	%	10.00	%	$	423,540	13.45	%	10.50	%	10.00	%
Tier 1 risk-based capital ratio	420,294		13.03	%	8.50	%	8.00	%	398,349		12.65	%	8.50	%	8.00	%
Common equity Tier 1 risk-based capital ratio	420,294		13.03	%	7.00	%	6.50	%	398,349		12.65	%	7.00	%	6.50	%
Tier 1 leverage capital ratio	420,294		8.64	%	4.00	%	5.00	%	398,349		9.19	%	4.00	%	5.00	%

(1)    “Minimum Regulatory Provisions To Be ‘Well Capitalized’” are not formally defined under applicable banking regulations for bank holding companies.