Stock-Based Compensation (Summary Of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Stock-Based Compensation [Abstract]
Shares, Outstanding at beginning of year	542,746
Shares Expired	(300)	0
Shares Cancelled or Forfeited		(7,500)
Shares, Outstanding at end of year	542,446
Shares, Expected to vest
Shares, Exercisable at end of period	542,446
Weighted Average Exercise Price, Outstanding at Beginning Balance	$ 1.46
Weighted Average Exercise Price, Expired	36.75
Weighted Average Exercise Price, Outstanding at Ending Balance	1.44
Weighted Average Exercise Price, Expected to Vest
Weighted Average Exercise Price, Exercisable at end of period	$ 1.44
Outstanding at end of period	6 years 2 months 12 days
Exercisable at end of period	6 years 2 months 12 days
Intrinsic value, Outstanding at end of year	$ 407,470
Intrinsic value, Expected to vest
Intrinsic value, Exercisable at end of period	$ 407,470