Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic Net Income per Common Share Available to Common Stockholders [Abstract]
Net income	$ 4,929,000	$ 4,156,000	$ 9,735,000	$ 8,195,000
Preferred stock dividends	(275,000)	(550,000)	(825,000)	(1,100,000)
Net income available to common stockholders	$ 4,654,000	$ 3,606,000	$ 8,910,000	$ 7,095,000
Weighted average common shares outstanding	9,152,709	7,198,980	8,804,107	7,112,309
Basic earnings per common share	$ 0.51	$ 0.50	$ 1.01	$ 1.00
Diluted Net Income per Common Share Available to Common Stockholders [Abstract]
Net income available to common stockholders	$ 4,654,000	$ 3,606,000	$ 8,910,000	$ 7,095,000
Effect of assumed preferred stock conversion	275,000	550,000	825,000	1,100,000
Net income applicable to diluted earnings per share	$ 4,929,000	$ 4,156,000	$ 9,735,000	$ 8,195,000
Weighted average common shares outstanding	9,152,709	7,198,980	8,804,107	7,112,309
Dilutive potential common shares [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	1,864		2,045	0
Restricted stock awarded	5,232	9,445	5,232	9,445
Assumed conversion of preferred stock	685,067	1,355,348	1,020,207	1,355,348
Dilutive potential common shares	692,163	1,364,793	1,027,484	1,364,793
Diluted weighted average common shares outstanding	9,844,872	8,563,773	9,831,591	8,477,102
Diluted net income per common share available to common stockholders	$ 0.50	$ 0.49	$ 0.99	$ 0.97
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	45,500	24,500	45,500