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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2016	$ 14,788	$ 134,871	$ 111,114	$ (4,155)	$ 256,618
Stock based compensation		122			122
Net income			15,809		15,809
Other comprehensive income, net of income taxes				699	699
Dividends declared			(6,952)		(6,952)
Common stock grants awarded, net of unearned compensation of $81: 2,020 shares	5	(5)
Balance at Sep. 30, 2017	14,793	134,988	119,971	(3,456)	266,296
Balance at Dec. 31, 2017	14,793	135,043	121,353	(6,213)	264,976
Stock based compensation		188			188
Net income			18,528		18,528
Other comprehensive income, net of income taxes				(3,469)	(3,469)
Dividends declared			(7,252)		(7,252)
Common stock grants awarded, net of unearned compensation of $81: 2,020 shares	5	(5)
Balance at Sep. 30, 2018					272,971
Reclassification related to adoption of ASU 2016-01 | Accounting Standards Update 2016-01			2	(2)
Balance	$ 14,798	$ 135,226	$ 132,631	$ (9,684)	$ 272,971

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