Summary of Significant Accounting Policies (Details) - Schedule of earnings per common share basic and diluted - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of earnings per common share basic and diluted [Abstract]
Net income	$ 9,568	$ 10,842	$ 10,521	$ 10,379	$ 8,023	$ 1,766	$ 4,378	$ 4,398	$ 41,311	$ 18,565	$ 19,925
Preferred stock dividends									112	112	141
Net income available to common stockholders	$ 9,540	$ 10,814	$ 10,493	$ 10,351	$ 7,995	$ 1,738	$ 4,350	$ 4,370	$ 41,199	$ 18,453	$ 19,784
Average number of common shares outstanding	30,033,062	30,045,818	29,868,247	29,757,316	29,699,301	29,636,001	16,372,885	16,350,183	29,938,458	23,029,813	16,349,204
Effect of dilutive options									346	449	37
Average number of common shares outstanding used to calculate diluted earnings per common share	30,310,905	30,335,571	30,231,480	30,149,469	30,149,244	30,108,103	16,430,376	16,405,540	30,283,966	23,479,074	16,385,692
Anti-dilutive common shares outstanding											14
Earnings per common share:
Basic	$ 0.32	$ 0.36	$ 0.35	$ 0.35	$ 0.27	$ 0.06	$ 0.27	$ 0.27	$ 1.38	$ 0.80	$ 1.21
Diluted	$ 0.31	$ 0.36	$ 0.35	$ 0.34	$ 0.27	$ 0.06	$ 0.26	$ 0.27	$ 1.36	$ 0.79	$ 1.21