Share-Based Compensation (Schedule Of Stock Option Activity) (Details) - shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Options outstanding, January 1	741,676	871,671
Options outstanding, March 31	760,008	870,012
Options exercisable, March 31	406,660	596,664
2012 Plan [Member]
Options granted	470,000	450,000
Options exercised	(451,668)	421,657
2005 Plan [Member]
Options granted	0	20,000
Options exercised	0	(50,002)