Stock-Based Compensation (Stock Option Activity) (Details) (Stock options [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares outstanding, beginning balance	2,984,160
Shares granted	662,457
Shares exercised	(202,159)
Shares forfeited	(322,038)
Shares expired	(87,000)
Shares outstanding, ending balance	3,035,420	2,984,160
Shares exercisable	2,140,468
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, outstanding, beginning balance (in dollars per share)	$ 6.70
Weighted Average Exercise Price, Granted (in dollars per share)	$ 5.81
Weighted Average Exercise Price, Exercised (in dollars per share)	$ 4.53
Weighted Average Exercise Price, Forfeited (in dollars per share)	$ 8.34
Weighted Average Exercise Price, Expired (in dollars per share)	$ 6.29
Weighted Average Exercise Price, outstanding, ending balance (in dollars per share)	$ 6.49	$ 6.70
Weighted Average Exercise Price, exercisable (in dollars per share)	$ 6.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Term, Outstanding	4 years 1 month 12 days
Weighted Average Remaining Contractual Term, Exercisable	3 years 3 months 22 days
Aggregate Intrinsic Value, Outstanding	$ 3,558
Aggregate Intrinsic Value, Exercisable	3,061
Weighted average grant date fair value, options granted	$ 2.50	$ 4.13	$ 3.94
Total intrinsic value, options exercised	$ 354	$ 500	$ 400