CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 96,094	$ 152,556	$ 103,996
Adjustments to reconcile net income to net cash provided by operating activities:
Net loss (gain) on sales of securities available-for-sale and other assets	1,469	(1,397)	(1,705)
Loss on equity securities	758		(131)
Net gain on sale of loans held for sale	(1,707)	(2,245)	(24,791)
Loss on termination of derivatives			16,505
Net depreciation, amortization and accretion	6,025	8,314	7,805
Amortization of fair value hedge basis point adjustments	561
Amortization of other intangible assets	1,425	1,878	2,622
Loss on extinguishment of debt		740	1,751
Stock-based compensation	4,638	4,278	5,407
Provision for credit losses	2,770	5,374	6,212
Originations of loans held for sale	(8,219)	(20,709)	(48,610)
Proceeds from sale of loans originated for sale	32,433	46,474	77,184
Increase in cash surrender value of BOLI	(9,103)	(8,190)	(6,721)
Gain from death benefits from BOLI	(645)	(2,156)	(350)
Decrease (Increase) in other assets	10,332	(35,170)	125,486
(Decrease) increase in other liabilities	(45,957)	145,425	(118,333)
Net cash provided by operating activities	90,874	295,172	146,327
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available-for-sale	77,804		138,077
Proceeds from sales of marketable equity securities			6,101
Purchases of securities available-for-sale	(86,084)	(39,232)	(1,095,028)
Purchases of securities held-to-maturity	(28,328)	(63,210)	(40,249)
Proceeds from calls and principal repayments of securities available-for-sale	76,858	165,097	411,031
Proceeds from calls and principal repayments of securities held-to-maturity	22,986	31,736	1,360
Purchase of BOLI	(8,000)	(30,000)	(40,000)
Proceeds received from cash surrender value of BOLI	1,224	2,843	1,464
Loans purchased			(9,855)
Proceeds from the sale of portfolio loans transferred to held for sale	5,000	13,201	684,898
Net increase in loans	(259,805)	(1,359,782)	282,683
(Purchases) sales of fixed assets, net	(5,721)	(3,745)	14
Proceeds from the sale of fixed assets and premises held for sale	25	1,914
Purchases of restricted stock, net	(10,005)	(51,013)	46,337
Net cash received in business combination			715,988
Net cash used in investing activities	(214,046)	(1,332,191)	1,102,821
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in deposits	276,411	(204,233)	518,682
(Repayments) proceeds from FHLBNY advances, short-term, net	20,000	1,070,000	(1,228,865)
Repayments of FHLBNY advances, long-term	162,000		(190,150)
Proceeds from FHLBNY advances, long-term	(1,360)	36,000	25,000
(Repayments) proceeds of other short-term borrowings, net		(502)	(118,138)
Proceeds from subordinated debentures issuance, net		157,559
Redemption of subordinated debentures		(155,000)
Proceeds from exercise of stock options			431
Release of stock for benefit plan awards	1,164	1,167	1,153
Payments related to tax withholding for equity awards	(1,258)	(1,558)	(111)
BMP Employee Stock Ownership Plan shares received to satisfy distribution of retirement benefits			(993)
Purchase of treasury stock	(947)	(46,762)	(59,280)
Redemption of REIT preferred stock			(121)
Cash dividends paid to preferred stockholders	(7,286)	(7,286)	(7,286)
Cash dividends paid to common stockholders	(37,302)	(36,791)	(39,351)
Net cash provided by financing activities	411,422	812,594	(1,099,029)
Increase (decrease) in cash and cash equivalents	288,250	(224,425)	150,119
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	169,297	393,722	243,603
CASH AND CASH EQUIVALENTS, END OF PERIOD	457,547	169,297	393,722
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for income taxes	37,910	43,518	34,771
Cash paid for interest	280,815	54,910	28,460
Securities available-for-sale transferred to held-to-maturity		372,154	140,399
Loans transferred to held for sale	37,346	34,997	692,751
Loans transferred to held for investment		4,051
Premises transferred to held for sale	905		2,799
Operating lease assets in exchange for operating lease liabilities	$ 6,333	$ 5,098	9,769
Cumulative change due to Current Expected Credit Loss ("CECL") Standard adoption			1,686
Net non-cash liabilities assumed in Merger (See Note 2)			$ 324,937