Stock-Based Compensation (Summary of Stock Option Activity) (Details) (Equity Option [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding and Exercisable, Beginning of Period	18,750	22,500	39,950
Shares, Granted	0	0	0
Shares, Canceled	0	0	0
Shares, Exercised	(11,250)	(3,750)	(17,450)
Shares, Outstanding and Exercisable, End of Period	7,500	18,750	22,500
Number of shares available for grant - Beginning,	513,280	517,280	271,465
Number of shares available for grant - Ending,	469,840	513,280	517,280
Weighted Average Exercise Price, Exercised	$ 11.67	$ 9.30	$ 7.03
Aggregate Intrinsic Value, Outstanding and Exercisable at End of Period	$ 296	$ 687	$ 743