CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net Income	$ 37,883	$ 24,433
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Originations of mortgage loans held for sale	(277,778)	(194,149)
Proceeds from the sale of mortgage loans	312,474	176,250
Gain on sale of mortgage loans, net of origination costs	(9,084)	(6,095)
(Credit) provision for credit losses	(5,359)	11,173
Depreciation and amortization expense	1,826	1,892
Investment securities amortization and accretion, net	3,733	1,755
Stock-based compensation expense	1,514	951
Amortization of core deposit intangible assets	328	341
Purchase accounting accretion, net	(435)	(617)
Net decrease (increase) in derivative collateral posted	22,090	(30,820)
Decrease (increase) in other assets	3,385	(7,789)
(Decrease) increase in other liabilities	(6,072)	3,188
Net cash provided by (used in) by operating activities	84,505	(19,487)
Investing Activities
Proceeds from available-for-sale debt securities	175,036	108,396
Purchase of available-for-sale debt securities	(482,156)	(206,496)
Net increase in loans	(66,366)	(231,369)
Purchase of Federal Home Loan Bank stock	(12)	(9,232)
Proceeds from sale of Federal Home Loan Bank stock	1,329	7,754
Purchase of premises and equipment	1,176	2,261
Recoveries of previously charged-off loans	208	170
Proceeds from the sale of other real estate owned	465	0
Net cash used in investing activities	(372,672)	(333,038)
Financing Activities
Net increase in deposits	288,870	458,624
Net proceeds from (repayments of) borrowings less than 90 days	7,974	(22,811)
Proceeds from Federal Home Loan Bank long-term advances	0	25,000
Repayments of Federal Home Loan Bank long-term advances	25,000	10,000
Repayment of subordinated debt	(15,000)	0
Common stock repurchases	(11)	(7,973)
Exercise of stock options and issuance of restricted stock, net of repurchase for tax withholdings	(308)	(100)
Cash dividends paid on common stock	10,323	9,954
Finance lease payments	(76)	(69)
Net cash provided by financing activities	246,126	432,717
Net (decrease) increase in cash, cash equivalents and restricted cash	(42,041)	80,192
Cash, cash equivalents, and restricted cash at beginning of period	145,774	75,636
Cash, cash equivalents and restricted cash at end of period	103,733	155,828
Supplemental information
Interest paid	5,874	13,528
Income taxes paid	10,294	279
Transfer from premises to other real estate owned	$ 204	$ 24