Share-Based Compensation (Share-based Compensation Arrangement by Share-based Payment Award, Awards, Vested and Expected to Vest, Outstanding and Exercisable) (Details) - Stock Options and Stock Appreciation Rights (SARs) shares in Thousands	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, December 31, 2015 (shares) | shares	232
Granted (shares) | shares	0
Exercised (shares) | shares	(1)
Expired or cancelled (shares) | shares	0
Outstanding, June 30, 2016 (shares) | shares	231
Exercisable (shares) | shares	222
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, December 31, 2015 (dollars per share) | $ / shares	$ 6.97
Granted (dollars per share) | $ / shares	0.00
Exercised (dollars per share) | $ / shares	3.91
Expired or cancelled (dollars per share) | $ / shares	0.00
Outstanding, March 31, 2016 (dollars per share) | $ / shares	6.98
Exercisable, weighted average exercise price (dollars per share) | $ / shares	$ 6.83