Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share
Securities excluded from diluted earnings per share calculation	606,894	61,870	605,146	81,919
Net Income
Net income	$ 4,643	$ (249)	$ 7,275	$ 1,723
Basic income available to common stockholders	4,643	(249)	7,275	1,723
Diluted income available to common stockholders plus assumed conversions	$ 4,643	$ (249)	$ 7,275	$ 1,723
Shares
Basic income available to common stockholders (in shares)	17,124,337	15,516,537	17,083,194	14,939,179
Effect of dilutive stock options (in shares)	352,053		339,734	782,083
Diluted income available to common stockholders plus assumed conversions (in shares)	17,476,390	15,516,537	17,422,928	15,721,262
Per Share Amount
Basic income available to common stockholders (in dollars per share)	$ 0.28	$ (0.02)	$ 0.43	$ 0.12
Diluted income available to common stockholders plus assumed conversions (in dollars per share)	$ 0.27	$ (0.02)	$ 0.42	$ 0.11