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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic
Net income	$ 6,513	$ 5,869	$ 12,820	$ 11,702
Weighted-average common shares outstanding	11,153,260	11,134,559	11,145,996	11,184,058
Basic earnings per share	$ 0.58	$ 0.53	$ 1.15	$ 1.05
Diluted
Net Income	$ 6,513	$ 5,869	$ 12,820	$ 11,702
Weighted-average common shares outstanding	11,153,260	11,134,559	11,145,996	11,184,058
Effect of dilutive restricted stock and stock appreciation rights	168,241	153,459	167,460	153,379
Weighted-average common shares outstanding assuming dilution	11,321,501	11,288,018	11,313,456	11,337,437
Diluted earnings per share	$ 0.58	$ 0.52	$ 1.13	$ 1.03

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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