Share-Based Compensation (Summary of Nonvested Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested options outstanding, January 1, 2012, shares	61
Granted, shares	88
Vested, shares	(26)
Canceled and forfeited, shares	(33)
Nonvested Outstanding, December 31, 2012, shares	90
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested options outstanding, January 1, 2012, weighted average exercise price	$ 25.18
Granted, weighted average exercise price	$ 12.08
Vested, weighted average exercise price	$ 25.86
Canceled and forfeited, weighted average exercise price	$ 23.52
Nonvested Outstanding, December 31, 2012, weighted average exercise price	$ 12.80