Earnings Per Share (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic Net Income per Common Share Available to Common Stockholders [Abstract]
Net income	$ 4,039,000	$ 3,607,000
Preferred stock dividends	(550,000)	(1,104,000)
Net income available to common stockholders	3,489,000	2,503,000
Weighted average common shares outstanding	7,024,678	5,883,340
Basic earnings per common share	$ 0.50	$ 0.43
Diluted Net Income per Common Share Available to Common Stockholders [Abstract]
Net income available to common stockholders	3,489,000	2,503,000
Effect of assumed preferred stock conversion	550,000	0
Net income applicable to diluted earnings per share	$ 4,039,000	$ 2,503,000
Weighted average common shares outstanding	7,024,678	5,883,340
Dilutive potential common shares [Abstract]
Assumed conversion of stock options	0	0
Restricted stock awarded	9,382	8,017
Assumed conversion of preferred stock	1,355,348	0
Dilutive potential common shares	1,364,730	8,017
Diluted weighted average common shares outstanding	8,389,408	5,891,357
Diluted net income per common share available to common stockholders	$ 0.48	$ 0.43
Stock options to purchase shares of common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)	52,000	128,750
Average dilutive potential common shares associated with convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)	0	2,494,790