Share-Based Compensation (Share-Based Payment Award Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, January 1, 2012, shares	349,454
Granted, shares	198,647
Exercised, shares	(6,812)
Canceled and forfeited, shares	(133,339)
Outstanding, December 31, 2012, shares	407,950	349,454
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, January 1, 2012, weighted average exercise price	$ 28.15
Granted, weighted average exercise price	$ 14.11
Exercised, weighted average exercise price	$ 10.55
Canceled and forfeited, weighted average exercise price	$ 26.58
Outstanding, December 31, 2012, weighted average exercise price	$ 22.12	$ 28.15
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, weighted average remaining contractual term	4 years 10 months 21 days
Outstanding, aggregate intrinsic value	$ 22,479
Vested and expected to vest, shares	383,752
Vested and expected to vest, weighted average exercise price	$ 22.66
Vested and expected to vest, weighted average remaining contractual term	4 years 7 months 5 days
Vested and expected to vest, aggregate intrinsic value	22,065
Exercisable, shares	266,411
Exercisable, weighted average exercise price	$ 26.58
Exercisable, weighted average remaining contractual term	2 years 6 months 21 days
Exercisable, aggregate intrinsic value, per share	20,594
Total intrinsic value of stock options exercised	17,000	0	0
Cash received from stock options exercised	$ 72,000	$ 0	$ 0