Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic:
Net Income	$ 5,381	$ 5,919	$ 9,822	$ 10,709
Preferred Dividend	(36)	(36)	(72)	(72)
Earnings Applicable to Common Stock	$ 5,345	$ 5,883	$ 9,750	$ 10,637
Basic EPS	$ 0.33	$ 0.36	$ 0.60	$ 0.65
Weighted average number of basic shares outstanding	16,332	16,271	16,316	16,252
Diluted:
Adjusted Earnings Applicable to Common Stock	$ 5,368	$ 5,906	$ 9,796	$ 10,683
Diluted EPS	$ 0.33	$ 0.36	$ 0.59	$ 0.65
Weighted average number of diluted shares outstanding	16,488	16,427	16,472	16,408
Convertible Preferred Stock $7.00 Series [Member]
Diluted:
Preferred Dividend	$ 17	$ 17	$ 12	$ 12
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	115	115	41	41
Convertible Preferred Stock $8.00 Series [Member]
Diluted:
Preferred Dividend	$ 6	$ 6	$ 34	$ 34
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	41	41	115	115