Share-Based Compensation (Summary of Nonvested Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested options outstanding, January 1, 2012, shares	89,480
Granted, shares	198,647
Vested, shares	(79,805)
Canceled and forfeited, shares	(66,783)
Nonvested Outstanding, December 31, 2012, shares	141,539.000
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	$ 12.65
Granted, weighted average exercise price	$ 14.11
Vested, weighted average exercise price	$ 13.77
Canceled and forfeited, weighted average exercise price	$ 13.36
Nonvested Outstanding, December 31, 2012, weighted average exercise price	$ 13.73