CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS UNAUDITED - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income	$ 189,703	$ 40,291
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,777	14,915
Provision/ (credit) for credit losses	(47,141)	90,158
Share based compensation expense	3,640	2,824
Deferred income tax/ (benefit)	12,280	(22,965)
Origination of loans held for sale	(1,211,421)	(1,042,787)
Proceeds from sales of loans held for sale	1,272,148	1,025,610
Gains on sales of loans held for sale	(27,111)	(17,850)
Losses on sale of other real estate owned	237	32
Investment securities gains	(178)	(432)
Tax benefit associated with share based compensation	1,316	(162)
Net (increase)/ decrease in accrued interest receivable	10,212	(17,243)
Net (increase)/ decrease other assets	(39,456)	1,812
Net increase/ (decrease) accrued expenses and other liabilities	(22,402)	5,173
Other, net	1,026	2,922
Net cash provided by operating activities	153,630	82,298
Investing activities:
Sales/ (purchases) of equity securities	24,663
Sales/ (purchases) of equity securities		(6,321)
Purchases of investments available-for-sale	(708,727)	(529,522)
Proceeds from sales of investment available-for-sale	360,945	121,357
Proceeds from maturities, calls and principal payments of investments available-for-sale	264,461	329,197
Net (increase)/ decrease in loans	696,399	(1,107,824)
Proceeds from the sales of other real estate owned	620	60
Cash paid for the acquisition of business activity of RPJ, net of cash acquired	0	(26,925)
Cash acquired in the acquisition of business activity of Revere Bank, net of cash paid	0	80,466
Expenditures for premises and equipment	(7,114)	(3,399)
Net cash provided by/ (used in) investing activities	631,247	(1,142,911)
Financing activities:
Net increase in deposits	957,888	1,202,228
Net increase/ (decrease) in in retail repurchase agreements and federal funds purchased	(395,653)	249,101
Proceeds from FHLB advances	0	400,000
Repayment of FHLB advances	(379,075)	(637,982)
Retirement of subordinated debt	(53,000)	(10,310)
Proceeds from issuance of common stock	4,164	1,474
Stock tendered for payment of withholding taxes	(1,577)	(463)
Repurchase of common stock	(54,321)	(25,702)
Dividends paid	(45,673)	(38,953)
Net cash provided by financing activities	32,753	1,139,393
Net increase in cash and cash equivalents	817,630	78,780
Cash and cash equivalents at beginning of period	297,003	146,103
Cash and cash equivalents at end of period	1,114,633	224,883
Supplemental disclosures:
Interest payments	31,173	47,105
Income tax payments, net of refunds of $2,673 in 2021	58,348	28,099
Transfers from loans to other real estate owned	$ 295	$ 0