Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income	$ 20,374	$ 33,649
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	1,409	1,698
Amortization of intangible assets	1,228	1,431
Provision for (reversal of) credit losses	8,330	(6,060)
Amortization of investment securities premium, net	5,618	1,186
Gain on sale of investment securities	0	0
Originations of loans for resale	(30,187)	(65,970)
Proceeds from sale of loans originated for resale	33,509	70,987
Gain on sale of loans	(1,246)	(3,247)
Change in market value of mortgage servicing rights	(274)	(12)
Provision for losses on foreclosed assets	0	9
Gain on sale of foreclosed assets	0	(51)
Operating lease expense payments	(1,292)	(1,204)
Gain on disposal of fixed assets	(1,078)	0
Increase in cash value of life insurance	(638)	(673)
Loss on marketable equity securities	137	53
Equity compensation vesting expense	812	537
Change in:
Interest receivable	(83)	562
Interest payable	(801)	(392)
Amortization of operating lease ROUA	1,374	1,317
Other assets and liabilities, net	(2,347)	7,376
Net cash from operating activities	34,845	41,196
Investing activities:
Proceeds from maturities of securities available for sale	85,298	91,813
Proceeds from maturities of securities held to maturity	12,894	23,850
Purchases of securities available for sale	(247,354)	(372,917)
Loan origination and principal collections, net	(161,865)	(102,230)
Loans purchased	0	(101,466)
Proceeds from sale of other real estate owned	0	577
Proceeds from sale of premises and equipment	6,689	0
Purchases of premises and equipment	(631)	(188)
Cash acquired from VRB, net of cash consideration paid	426,883	0
Net cash from (used by) investing activities	121,914	(460,561)
Financing activities:
Net change in deposits	131,839	357,466
Net change in other borrowings	(13,903)	9,312
Repurchase of common stock, net of option exercises	0	(10)
Dividends paid	(7,433)	(7,432)
Net cash from financing activities	110,503	359,336
Net change in cash and cash equivalents	267,262	(60,029)
Cash and cash equivalents, beginning of period	768,421	669,551
Cash and cash equivalents, end of period	1,035,683	609,522
Supplemental disclosure of noncash activities:
Unrealized loss on securities available for sale	(111,302)	(12,337)
Loans transferred to held-for-sale	12,044	0
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	55	2
Obligations incurred in conjunction with leased assets	521	1,308
Loans transferred to foreclosed assets	313	0
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	1,546	1,868
Cash paid for income taxes	$ 0	$ 0