CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 52,909	$ 54,024	$ 31,959
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (Release of) credit losses	3,881	(1,294)	18,310
Amortization (accretion) of deferred charges and fees, net	2,282	(1,434)	(780)
Depreciation (accretion), and amortization, net	726	(1,838)	(8,134)
Bank owned life insurance income	(1,808)	(801)	(747)
(Gain) loss on disposition of investment securities			(69)
Share-based compensation and other share-based activity	1,959	2,279	4,564
Change in accrued interest receivable	(4,280)	352	253
Deferred income tax expense	587	2,899	(665)
Change in loans held for sale	1,490	5,419	(5,363)
Change in other assets, net	(32,056)	5,473	(22,863)
Change in other liabilities, net	26,260	429	20,332
Net cash provided by operating activities	51,950	65,508	36,797
CASH FLOWS FROM INVESTING ACTIVITIES
Origination of loans	(1,265,305)	(1,327,044)	(1,070,321)
Proceeds from principal payments of loans	850,886	1,170,430	1,022,516
Purchase of loans	(23,655)
Proceeds from calls/maturities of securities available for sale	29,040	42,169	47,087
Purchase of securities available for sale	(10,170)	(9,927)	(140,570)
Proceeds from sales of securities	19,018		10,821
Proceeds from calls/maturities of securities held to maturity	132,173	70,800	56,007
Purchase of securities held to maturity	(205,137)	(801,775)	(33,818)
Death benefit on bank-owned life insurance	4,025
Redemption on bank-owned life insurance	10,759
(Purchase) redemption of FHLB of Boston stock	(1,215)	918	8,505
Purchase of banking premises and equipment	(1,776)	(2,033)	(2,218)
Net cash acquired in business combinations	82,174		43,063
Net cash used in investing activities	(379,183)	(856,462)	(58,928)
CASH FLOWS FROM FINANCING ACTIVITIES
Change in demand, interest bearing, money market and savings accounts	(216,751)	1,020,821	422,866
Change in certificates of deposit	327,938	(92,552)	(138,213)
Change in short term borrowings	85,026	(16,393)	(224,989)
Redemption of subordinated debt			(10,000)
Cash dividends paid on common stock	(18,414)	(16,554)	(13,083)
Net cash provided by financing activities	177,799	895,322	36,581
Net change in cash and cash equivalents	(149,434)	104,368	14,450
Cash and cash equivalents at beginning of period	180,153	75,785	61,335
Cash and cash equivalents at end of period	30,719	180,153	75,785
Cash paid during the period for:
Interest	15,805	5,656	9,172
Income taxes	21,822	$ 9,054	14,628
Significant non-cash transactions
Transfer of other real estate owned			2,293
Common Stock issued to shareholders due to merger	62,850		87,163
Fair value of assets acquired, net of cash acquired	346,501		961,668
Fair value of liabilities assumed	$ 378,453		$ 917,569