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Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balances at Dec. 31, 2017	$ 457,078	$ 275,059	$ 185,570	$ (3,551)
Net income	39,984		39,984
Other comprehensive loss, net of tax	(8,646)			(8,646)
Amortization of unearned compensation	45	45
Exercise of stock options	493	493
Stock option expense	207	207
Reclassification of tax adjustment on accumulated other comprehensive loss			766	(766)
Cash dividends on common stock	(11,567)		(11,567)
Ending Balances at Sep. 30, 2018	$ 477,594	$ 275,804	$ 214,753	$ (12,963)

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