Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Weighted Average Grant Date Fair Value
Compensation expense				$ 676	$ 753
Restricted Stock Awards [Member]
Shares
Outstanding beginning balance (in shares)				219,751
Granted (in shares)				134,114
Vested (in shares)				(62,986)
Forfeited (in shares)				(15,600)
Outstanding ending balance (in shares)	275,279	219,751		275,279
Weighted Average Grant Date Fair Value
Outstanding beginning balance (in dollars per share)				$ 19.74
Granted (in dollars per share)				$ 14.23
Vested (in dollars per share)				$ 18.49
Forfeited (in dollars per share)				$ 21.03
Outstanding ending balance (in dollars per share)	$ 17.27	$ 19.74		$ 17.27
Compensation expense	375		393	676	753
Unrecognized compensation costs	$ 2,760	$ 1,857		$ 2,760
Costs are expected to be recognized over a weighted average period	1 year 11 months 15 days	1 year 2 months 12 days