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LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 12, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		$ 152,419	$ 146,922	$ 113,392	$ 67,740
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				(1,137)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				1,157
Financing Receivable, Allowance for Credit Loss, Writeoff		(2,652)	(4,944)	(8,446)
Financing Receivable, Allowance for Credit Loss, Recovery		1,649	3,729	1,578
Contractual cash flows not expected to be collected	$ 16,540
Financing Receivable, Credit Loss, Expense (Reversal)		6,500	18,205	52,500
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		27,559	14,402	21,086	17,594
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				(1,984)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				49
Financing Receivable, Allowance for Credit Loss, Writeoff		0	(3,474)	(2,309)
Financing Receivable, Allowance for Credit Loss, Recovery		49	2,686	289
Contractual cash flows not expected to be collected	166
Financing Receivable, Credit Loss, Expense (Reversal)		13,108	(6,062)	7,447
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		77,799	83,486	45,009	32,935
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				(13,048)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				337
Financing Receivable, Allowance for Credit Loss, Writeoff		(62)	0	(3,885)
Financing Receivable, Allowance for Credit Loss, Recovery		333	57	9
Contractual cash flows not expected to be collected	14,397
Financing Receivable, Credit Loss, Expense (Reversal)		(5,958)	24,023	28,661
Construction Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		10,762	12,316	5,397	6,053
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				(3,652)
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				0
Financing Receivable, Allowance for Credit Loss, Writeoff		0	0	0
Financing Receivable, Allowance for Credit Loss, Recovery		0	0	0
Contractual cash flows not expected to be collected	1,019
Financing Receivable, Credit Loss, Expense (Reversal)		(1,554)	5,900	2,996
Small Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		2,834	3,508	5,095	1,746
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				495
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				0
Financing Receivable, Allowance for Credit Loss, Writeoff		(196)	(219)	(380)
Financing Receivable, Allowance for Credit Loss, Recovery		149	98	33
Contractual cash flows not expected to be collected	0
Financing Receivable, Credit Loss, Expense (Reversal)		(627)	(1,466)	3,201
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		20,973	14,484	14,275	3,440
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				9,828
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				423
Financing Receivable, Allowance for Credit Loss, Writeoff		0	0	(105)
Financing Receivable, Allowance for Credit Loss, Recovery		0	1	2
Contractual cash flows not expected to be collected	429
Financing Receivable, Credit Loss, Expense (Reversal)		6,489	(221)	687
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		11,504	17,986	22,060	5,576
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				7,012
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				319
Financing Receivable, Allowance for Credit Loss, Writeoff		(122)	(69)	(142)
Financing Receivable, Allowance for Credit Loss, Recovery		121	249	210
Contractual cash flows not expected to be collected	163
Financing Receivable, Credit Loss, Expense (Reversal)		(6,481)	(4,417)	9,085
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		988	740	470	$ 396
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method				212
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase				29
Financing Receivable, Allowance for Credit Loss, Writeoff		(2,272)	(1,182)	(1,625)
Financing Receivable, Allowance for Credit Loss, Recovery		997	638	1,035
Contractual cash flows not expected to be collected	$ 366
Financing Receivable, Credit Loss, Expense (Reversal)		$ 1,523	$ 448	$ 423

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- Definition

Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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