Earnings Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Basic Net Income per Common Share Available to Common Stockholders [Abstract]
Net income	$ 4,806,000	$ 4,039,000
Preferred stock dividends	(550,000)	(550,000)
Net income available to common stockholders	$ 4,256,000	$ 3,489,000
Weighted average common shares outstanding	8,455,507	7,024,678
Basic earnings per common share	$ 0.50	$ 0.50
Diluted Net Income per Common Share Available to Common Stockholders [Abstract]
Net income available to common stockholders	$ 4,256,000	$ 3,489,000
Effect of assumed preferred stock conversion	550,000	550,000
Net income applicable to diluted earnings per share	$ 4,806,000	$ 4,039,000
Weighted average common shares outstanding	8,455,507	7,024,678
Dilutive potential common shares [Abstract]
Restricted stock awarded	5,232	9,382
Assumed conversion of preferred stock	1,355,348	1,355,348
Dilutive potential common shares	1,360,758	1,364,730
Diluted weighted average common shares outstanding	9,816,265	8,389,408
Diluted net income per common share available to common stockholders	$ 0.49	$ 0.48
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	178	0
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)	24,500	52,000