Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic:
Net Income	$ 6,907	$ 7,668
Preferred Dividend	(30)	(30)
Earnings Applicable to Common Stock	$ 6,877	$ 7,638
Basic EPS	$ 0.39	$ 0.44
Weighted average number of basic shares outstanding	17,476	17,437
Diluted:
Adjusted Earnings Applicable to Common Stock	$ 6,894	$ 7,655
Diluted EPS	$ 0.39	$ 0.44
Weighted average number of diluted shares outstanding	17,591	17,552
Convertible Preferred Stock $7.00 Series [Member]
Diluted:
Preferred Dividend	$ 17	$ 17
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	115	115