Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic:
Net Income	$ 8,146	$ 8,675	$ 14,696	$ 13,169
Preferred Dividend	(36)	(36)	(72)	(72)
Earnings Applicable to Common Stock	$ 8,110	$ 8,639	$ 14,624	$ 13,097
Basic EPS	$ 0.49	$ 0.53	$ 0.89	$ 0.80
Weighted average number of basic shares outstanding	16,519	16,388	16,474	16,371
Diluted:
Adjusted Earnings Applicable to Common Stock	$ 8,133	$ 8,662	$ 14,670	$ 13,143
Diluted EPS	$ 0.49	$ 0.52	$ 0.88	$ 0.80
Weighted average number of diluted shares outstanding	16,675	16,544	16,630	16,527
Convertible Preferred Stock $7.00 Series [Member]
Diluted:
Preferred Dividend	$ 17	$ 17	$ 34	$ 34
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	$ 12	$ 12
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	41	41	41	41