Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 59,228	$ 51,493	$ 47,346
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,786	4,007	3,904
Deferred taxes	(246)	(3,090)	701
Stock-based compensation	710	636	458
Excess tax benefits of stock-based compensation	0	0	100
Provision for loan losses	6,167	7,521	7,872
Write-downs of other real estate owned and other repossessed assets	2,530	3,034	1,214
Gains on sale of loans held for sale	(1,288)	(1,320)	(1,831)
Securities (gains) losses	85	(73)	(522)
Gain on debt repurchase	0	(560)	0
Gains (losses) on sale of assets, net	(175)	40	46
Proceeds from sale of mortgage loans held for sale	56,689	59,400	81,441
Funding of mortgage loans held for sale	(56,829)	(57,869)	(79,682)
Amortization of securities premiums and discounts, net	4,679	3,437	2,452
Change in cash surrender value of bank owned life insurance	(2,924)	(1,473)	(1,546)
Mortgage servicing rights:
Fair value adjustments	343	361	324
New servicing assets created	(466)	(412)	(521)
Changes in:
Other assets	(15,788)	(4,412)	(3,205)
Other liabilities	8,986	1,631	2,874
Net cash provided by operating activities	65,487	62,351	61,425
Certificates of deposit in other banks:
Purchase of certificates of deposit	0	(11,760)	0
Maturity of certificates of deposit	5,880	2,940	2,852
Securities available-for-sale (AFS):
Purchase of AFS securities	(281,511)	(231,680)	(176,236)
Proceeds from sales of AFS securities	153,315	87,472	54,446
Proceeds from prepayments, calls, and maturities of AFS securities	109,701	159,584	104,302
Securities held-to-maturity (HTM):
Proceeds from prepayments and maturities of HTM securities	10	207	795
Change in loans, net	(93,151)	(194,548)	(74,379)
Purchase of premises and equipment	(2,832)	(2,400)	(3,498)
Proceeds from sale and retirement of premises and equipment	97	25	10
Redemption of stock by Federal Home Loan Bank	3,214	0	0
Proceeds from sale of other real estate and repossessed assets	3,485	3,574	5,601
Proceeds from settlement of bank owned life insurance	1,202	0	0
Net cash used in investing activities	(100,590)	(186,586)	(86,107)
Cash flows from financing activities:
Change in deposits, net	42,087	182,555	100,526
Change in repurchase agreements and federal funds purchased, net	(17,234)	(4,755)	1,060
Advances from Federal Home Loan Bank	0	350,000	50,000
Payments on advances from Federal Home Loan Bank	(409)	(350,099)	(150,112)
Repurchase of long-term debt	0	(1,440)	0
Issuance of common stock	1,230	1,513	2,985
Repurchase of common stock	0	0	(382)
Excess tax benefits of stock-based compensation	0	0	(100)
Dividends paid	(24,395)	(22,981)	(22,190)
Net cash provided by (used in) financing activities	1,279	154,793	(18,213)
Net increase (decrease) in cash and cash equivalents	(33,824)	30,558	(42,895)
Cash and cash equivalents at beginning of year	175,274	144,716	187,611
Cash and cash equivalents at end of year	141,450	175,274	144,716
Supplemental disclosures:
Income taxes paid	9,700	21,400	19,244
Interest paid	28,621	17,266	13,426
Non-cash activities:
Loans to facilitate the sale of other real estate owned and repossessed assets	4,385	2,679	3,964
Common stock dividends accrued, paid in subsequent quarter	221	205	209
Real estate acquired in settlement of loans	$ 5,459	$ 5,235	$ 5,900

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The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.

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The cash outflow to reacquire common stock during the period.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the additional capital contribution to the entity.

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Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.

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The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The cash inflow from proceeds From Sales of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans.

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Amount of expense related to estimated loss from loan and lease transactions.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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