Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Stock options excluded (in shares)	0	448,000	249,000	316,614	249,000
Net Income
Net income	$ 7,837	$ 7,825	$ 5,450	$ 17,450	$ 12,725
Basic income available to common stockholders	7,837	7,825	5,450	17,450	12,725
Diluted income available to common stockholders plus assumed conversions	$ 7,837	$ 7,825	$ 5,450	$ 17,450	$ 12,725
Shares
Basic income available to common stockholders (in shares)	21,510,678	21,493,641	17,069,216	21,037,345	17,078,945
Effect of dilutive stock options and warrants (in shares)	356,162	335,235	273,666	304,859	306,890
Diluted income available to common stockholders plus assumed conversions (in shares)	21,866,840	21,828,876	17,342,882	21,342,204	17,385,835
Per Share Amount
Basic income available to common stockholders (in dollars per share)	$ 0.36	$ 0.36	$ 0.32	$ 0.83	$ 0.75
Diluted income available to common stockholders plus assumed conversions (in dollars per share)	$ 0.36	$ 0.36	$ 0.31	$ 0.82	$ 0.73