Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Basic:
Net Income	$ 6,758	$ 5,807	$ 14,654	$ 13,465
Preferred Dividend	(36)	(44)	(115)	(147)
Earnings Applicable to Common Stock	6,722	5,763	14,539	13,318
Basic EPS (in dollars per share)	$ 0.42	$ 0.36	$ 0.91	$ 0.84
Weighted-average number of basic shares outstanding (in shares)	16,097	15,882	16,030	15,839
Diluted:
Adjusted Earnings Applicable to Common Stock	6,745	5,793	14,614	13,425
Diluted EPS (in dollars per share)	$ 0.42	$ 0.36	$ 0.90	$ 0.83
Weighted-average diluted shares outstanding (in shares)	16,253	16,117	16,211	16,093
Convertible Preferred Stock $7.00 Series [Member]
Diluted:
Preferred Dividend	17	24	57	73
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	115	167	140	167
Convertible Preferred Stock $8.00 Series [Member]
Diluted:
Preferred Dividend	$ 6	$ 6	$ 18	$ 34
Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock (in shares)	41	68	41	87