CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net Income	$ 19,740	$ 13,493
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Originations of mortgage loans held for sale	(174,370)	(85,676)
Proceeds from the sale of mortgage loans	198,799	70,711
Gain on sale of mortgage loans, net of origination costs	(6,173)	(1,476)
(Credit) provision for credit losses	(1,956)	1,775
Depreciation and amortization expense	927	969
Investment securities amortization and accretion, net	1,971	742
Stock-based compensation expense	703	421
Amortization of core deposit intangible assets	164	170
Purchase accounting accretion, net	(234)	(244)
Net decrease (increase) in derivative collateral posted	24,380	(29,040)
Decrease (increase) in other assets	591	(1,801)
Decrease in other liabilities	(2,484)	(3,039)
Net cash provided by (used in) by operating activities	62,058	(32,995)
Investing Activities
Proceeds from sales and maturities of available-for-sale securities	94,697	40,188
Purchase of available-for-sale securities	(118,707)	(58,826)
Net increase in loans	(17,277)	(62,982)
Purchase of Federal Home Loan Bank stock	0	(9,161)
Proceeds from sale of Federal Home Loan Bank stock	1,329	7,754
Purchase of premises and equipment	320	1,284
Recoveries of previously charged-off loans	51	68
Proceeds from the sale of other real estate owned	350	0
Net cash used in investing activities	(39,877)	(84,243)
Financing Activities
Net increase in deposits	206,386	25,966
Net proceeds from borrowings less than 90 days	23,969	57,913
Proceeds from Federal Home Loan Bank long-term advances	0	25,000
Repayments of Federal Home Loan Bank long-term advances	25,000	0
Common stock repurchases	(11)	(7,973)
Exercise of stock options and issuance of restricted stock, net of repurchase for tax withholdings	(80)	(53)
Cash dividends paid on common stock	4,934	5,009
Finance lease payments	(38)	(33)
Net cash provided by financing activities	200,292	95,811
Net increase (decrease) in cash, cash equivalents and restricted cash	222,473	(21,427)
Cash, cash equivalents, and restricted cash at beginning of period	145,774	75,636
Cash, cash equivalents and restricted cash at end of period	368,247	54,209
Supplemental information
Interest paid	3,117	8,555
Income taxes paid	176	126
Transfer from premises to other real estate owned	$ 204	$ 0