UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Dividends declared per share (in dollars per share)	$ 0.12	$ 0.11
Share-based payment arrangement, shares withheld for tax withholding obligation (in shares)	330,038	98,351
Restricted Stock
Restricted stock, shares cancelled upon forfeitures (in shares)	2,983	0
Restricted Stock \| Cambridge Bancorp
Share-based payment arrangement, shares withheld for tax withholding obligation (in shares)	7,452
Restricted stock, shares cancelled upon forfeitures (in shares)	2,983

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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+ References

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