Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net income	$ 16,121	$ 22,726
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	1,618	1,838
Amortization of intangible assets	1,431	1,431
Provision for (reversal of) credit losses	8,000	(1,600)
Amortization of investment securities premium, net	509	571
Originations of loans for resale	(28,394)	(18,119)
Proceeds from sale of loans originated for resale	31,629	16,689
Gain on sale of loans	(891)	(412)
Change in market value of mortgage servicing rights	1,258	645
Gain on transfer of loans to foreclosed assets	0	(98)
Gain on sale of foreclosed assets	(41)	(99)
Operating lease expense payments	(1,237)	(1,218)
Loss on disposal of fixed assets	0	38
Increase in cash value of life insurance	(720)	(775)
Gain on life insurance death benefit	0	(32)
Gain on marketable equity securities	(47)	(36)
Equity compensation vesting expense	439	397
Change in:
Interest receivable	322	(1,019)
Interest payable	(421)	198
Amortization of operating lease ROUA	1,362	480
Other assets and liabilities, net	2,609	450
Net cash from operating activities	33,547	22,055
Investing activities:
Proceeds from maturities of securities available for sale	20,212	15,133
Proceeds from maturities of securities held to maturity	15,592	13,684
Purchases of securities available for sale	(101,899)	(1,238)
Loan origination and principal collections, net	(70,833)	(11,351)
Proceeds from sale of other real estate owned	353	278
Proceeds from sale of premises and equipment	0	11
Purchases of premises and equipment	(761)	(1,650)
Net cash from (used by) investing activities	(137,336)	14,867
Financing activities:
Net change in deposits	35,704	63,796
Net change in other borrowings	855	(3,373)
Repurchase of common stock, net of option exercises	(17,147)	(388)
Dividends paid	(6,664)	(5,782)
Net cash used from financing activities	12,748	54,253
Net change in cash and cash equivalents	(91,041)	91,175
Cash and cash equivalents, beginning of period	276,507	227,533
Cash and cash equivalents, end of period	185,466	318,708
Supplemental disclosure of noncash activities:
Unrealized gain (loss) on securities available for sale	(29,561)	12,710
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	148	647
Obligations incurred in conjunction with leased assets	3,393	32,006
Loans transferred to foreclosed assets	0	116
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	3,746	3,389
Cash paid for income taxes	$ 0	$ 0