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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statements Of Comprehensive Income [Abstract]
Net income	$ 11,065	$ 8,784	$ 7,619
Available for sale investment securities:
Gross unrealized holding loss arising in the period	(374)	(1,170)	(406)
Related tax expense	126	398	138
Less: reclassification adjustment for gain realized in income	119	262
Related tax benefit	(40)	(89)
Net effect on other comprehensive loss	(169)	(599)	(268)
Total comprehensive income	$ 10,896	$ 8,185	$ 7,351

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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