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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic:
Net Income	$ 7,642	$ 8,813	$ 17,463	$ 19,522
Preferred Dividend	(36)	(36)	(108)	(108)
Earnings Applicable to Common Stock	$ 7,606	$ 8,777	$ 17,355	$ 19,414
Basic EPS	$ 0.47	$ 0.54	$ 1.06	$ 1.19
Weighted average number of basic shares outstanding	16,340	16,284	16,324	16,262
Diluted:
Adjusted Earnings Applicable to Common Stock	$ 7,629	$ 8,800	$ 17,423	$ 19,482
Diluted EPS	$ 0.46	$ 0.54	$ 1.06	$ 1.19
Weighted average number of diluted shares outstanding	16,496	16,440	16,480	16,418
Convertible Preferred Stock $7.00 Series [Member]
Diluted:
Preferred Dividend	$ 17	$ 17	$ 50	$ 50
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	115	115	115	115
Convertible Preferred Stock $8.00 Series [Member]
Diluted:
Preferred Dividend	$ 6	$ 6	$ 18	$ 18
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	41	41	41	41

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- Definition

The after-tax amount of any dividends on convertible preferred stock.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible preferred stock using the if-converted method.

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