Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Activities
Net Income	$ 28,370	$ 29,723	$ 27,392
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	2,850	6,335	750
Depreciation and Amortization	2,186	1,896	1,685
Provision for Deferred Income Taxes	12,605	(2,299)	(907)
Net Amortization of Investment Security Premium & Discounts	1,430	1,481	1,554
Amortization of Core Deposit Intangible	110	13	0
Accretion of Discount on Acquired Loans	(202)	(43)	0
Net (Gain) Loss on Investment Securities	(131)	284	(275)
Net (Gain) Loss on Sale of Property & Equipment	(1,189)	71	(383)
Net Gain on Sale of ORE	(414)	(5,941)	(299)
Net Gain from Acquisition	0	(1,832)	0
Net Change in Operating Assets & Liabilities:
Net (Increase) Decrease in Interest Receivable and Other Assets	(275)	1,056	4,685
Net (Decrease) Increase in Interest Payable and Other Liabilities	(5,396)	4,068	3,125
Net Cash Provided by Operating Activities	39,944	34,812	37,327
Investing Activities
Purchase of Investment Securities Available-for-Sale	(325,573)	(497,797)	(203,996)
Proceeds from Sold, Matured, or Called Securities Available-for-Sale	289,857	426,142	227,157
Purchase of Investment Securities Held-to-Maturity	(1,205)	(2,264)	(17,747)
Proceeds from Matured, or Called Securities Held-to-Maturity	4,794	5,499	18,031
Net Loans & Leases Paid, Originated or Acquired	(38,178)	(148,960)	(284,211)
Principal Collected on Loans & Leases Previously Charged Off	259	232	5,468
Cash Acquired in Acquisition, Net of Cash Paid	0	31,751	0
Additions to Premises and Equipment	(4,254)	(1,504)	(2,726)
Purchase of Other Investment	(14,380)	(6,825)	(2,110)
Proceeds from Sale of Property & Equipment	3,304	0	670
Proceeds from Sale of ORE	3,186	8,282	1,156
Net Cash Used in Investing Activities	(82,190)	(185,444)	(258,308)
Financing Activities
Net Increase in Deposits	141,517	200,524	213,459
Cash Dividends	(10,982)	(10,478)	(10,157)
Net Cash Provided by (Used in) Financing Activities	130,535	190,046	203,302
Increase (Decrease) in Cash and Cash Equivalents	88,289	39,414	(17,679)
Cash and Cash Equivalents at Beginning of Year	98,860	59,446	77,125
Cash and Cash Equivalents at End of Year	187,149	98,860	59,446
Supplementary Data
Loans Transferred to Foreclosed Assets (ORE)	0	538	0
Cash Payments Made for Income Taxes	13,942	12,891	8,475
Issuance of Common Stock to the Bank's Non-Qualified Retirement Plans	2,953	2,586	3,360
Interest Paid	6,005	3,856	3,190
Acquisitions:
Fair Value of Assets Acquired	0	114,871	0
Fair Value of Liabilities Acquired	0	103,861	0
Issuance of Common Stock to Acquired Bank's Shareholders	$ 0	$ 6,921	$ 0