Share-Based Compensation (Schedule Of Stock Option Activity) (Details) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Options outstanding, January 1	541,679	741,676
Options outstanding, March 31	934,181	760,008
Options exercisable, March 31	540,830	406,660
2012 Plan [Member]
Options granted	485,000	470,000
Options exercised	(70,830)	451,668
Options forfeited	(6,668)	0
2005 Plan [Member]
Options exercised	(15,000)	0