Share-Based Compensation (Summary of Grant Date Fair Value of Awards) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options	$ 121	$ 360	$ 3,628	$ 2,419
Restricted stock	0	67	4,182	3,009
Total	$ 121	$ 427	$ 7,810	$ 5,428