Capitalization (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic:
Net Income	$ 3,168	$ 5,807	$ 4,481	$ 3,177	$ 2,726	$ 6,138	$ 3,725	$ 1,807	$ 16,633	$ 14,396	$ 13,447
Preferred Dividend									(190)	(206)	(206)
Earnings Applicable to Common Stock									16,443	14,190	13,241
Weighted-average number of basic shares outstanding, shares									15,868,000	15,733,000	15,615,000
Basic EPS	$ 0.2	$ 0.36	$ 0.28	$ 0.2	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 1.04	$ 0.90	$ 0.85
Diluted:
$7.00 Series Preferred Dividend									97	97	97
$8.00 Series Preferred Dividend									40	56	56
Adjusted Earnings Applicable to Common Stock									$ 16,580	$ 14,343	$ 13,394
Incremental common shares attributable to $7.00 series preferred shares, shares									166	166	166
Incremental common shares attributable to $8.00 series preferred shares, shares									76	96	96
Weighted-average diluted shares outstanding, shares									16,110,000	15,995,000	15,877,000
Diluted EPS	$ 0.19	$ 0.36	$ 0.28	$ 0.2	$ 0.17	$ 0.39	$ 0.23	$ 0.11	$ 1.03	$ 0.90	$ 0.84