CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net income	$ 166,299	$ 235,107	$ 96,953
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	11,906	14,522	19,873
Provision/ (credit) for credit losses - loans	34,372	(45,556)	85,669
Share based compensation expense	7,887	5,299	3,850
Gain on disposal of assets	(16,516)	0	0
Deferred income tax / (benefit)	(9,491)	12,255	(29,568)
Origination of loans held for sale	(363,204)	(1,385,664)	(1,576,865)
Proceeds from sales of loans held for sale	398,688	1,456,110	1,585,690
Gains on sales of loans held for sale	(7,781)	(31,561)	(33,418)
Losses on sale of other real estate owned	86	241	32
Investment securities (gains)/ losses	345	(212)	(467)
Tax benefit associated with share based compensation	(646)	(1,850)	(133)
Net (increase)/ decrease in accrued interest receivable	(6,823)	12,082	(15,499)
Net (increase)/ decrease other assets	(4,776)	(35,498)	1,500
Net increase/ (decrease) accrued expenses and other liabilities	9,686	(20,771)	1,704
Other, net	(3,710)	1,894	2,660
Net cash provided by operating activities	216,322	216,398	141,981
Investing activities:
Sales/ (purchases) of other investments	(28,052)		(3,553)
Sales/ (purchases) of other investments		24,594
Purchases of investments available-for-sale	(469,792)	(933,491)	(633,741)
Proceeds from sales of investment available-for-sale	18,087	400,567	121,357
Proceeds from maturities, calls and principal payments of investments available-for-sale	240,217	369,678	441,672
Proceeds from maturities, calls and principal payments of investments held-to-maturity	31,759	0	0
Net (increase)/ decrease in loans	(1,420,983)	457,724	(1,174,467)
Proceeds from the sales of other real estate owned	335	680	60
Proceeds from sale of business activity, net	23,822	0	0
Cash paid for the acquisition of business activity of RPJ, net of cash acquired	0	0	(26,925)
Cash acquired in the acquisition of business activity of Revere Bank, net of cash paid	0	0	80,442
Expenditures for premises and equipment	(14,589)	(11,491)	(5,041)
Net cash provided by/ (used in) investing activities	(1,619,196)	308,261	(1,200,196)
Financing activities:
Net increase in deposits	330,721	595,942	1,270,328
Net increase/ (decrease) in retail repurchase agreements and federal funds purchased	180,881	(402,071)	329,552
Proceeds from FHLB advances	2,526,625	0	400,000
Repayment of FHLB advances	(1,976,625)	(379,075)	(703,117)
Proceeds from issuance of subordinated debt	200,000	0	0
Retirement of subordinated debt	0	(53,000)	(10,310)
Proceeds from issuance of common stock	2,192	5,758	1,997
Stock tendered for payment of withholding taxes	(2,353)	(1,577)	(458)
Repurchase of common stock	(24,987)	(107,268)	(25,702)
Dividends paid	(61,368)	(60,351)	(53,175)
Net cash provided by/ (used in) financing activities	1,175,086	(401,642)	1,209,115
Net increase/ (decrease) in cash and cash equivalents	(227,788)	123,017	150,900
Cash and cash equivalents at beginning of year	420,020	297,003	146,103
Cash and cash equivalents at end of year	192,232	420,020	297,003
Supplemental Disclosures:
Interest payments	62,240	37,847	62,637
Income tax payments, net of refunds of $966, $2,673 and $1,924 in 2022, 2021 and 2020	62,098	71,908	56,430
Transfers from loans to other real estate owned	$ 0	$ 257	$ 70