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BUSINESS COMBINATIONS (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Jan. 02, 2025 USD ($) Branch loan $ / shares shares	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Business Acquisition [Line Items]
Assets		$ 6,964,785	$ 5,805,138
Goodwill		153,770	$ 94,697
Financing Receivable, Net Loan Accretion Attributable To Fair Value Discount		4,300
Provision for acquired non-PCD loans	$ 6,300	$ 6,293
Northway Financial, Inc "NFI"
Business Acquisition [Line Items]
Stockholders' Equity Note, Stock Split, Conversion Ratio	0.83
Acquire amount value	$ 96,490
Common stock closing price (in dollars per share) | $ / shares	$ 42.25
Number of shares issued (in shares) | shares	2,283,782
Business Combination, Outstanding Shares Percentage	14.00%
Number of branches | Branch	17
Number Of Branches Added By Merger | loan	73
Assets	$ 7,000,000
Noncash Merger Related Costs	7,500
Goodwill	$ 59,073

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