Stock-Based Compensation (Summary Of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 shares
Stock-Based Compensation [Abstract]
Shares, Outstanding at beginning of year | shares	542,746
Shares Expired | shares	(300)	0
Shares, Outstanding at end of year | shares	542,446
Shares, Expected to vest | shares
Shares, Exercisable at end of period | shares	542,446
Weighted Average Exercise Price, Outstanding at Beginning Balance | $ / shares	$ 1.46
Weighted Average Exercise Price, Expired | $ / shares	36.75
Weighted Average Exercise Price, Outstanding at Ending Balance | $ / shares	1.44
Weighted Average Exercise Price, Expected to Vest | $ / shares
Weighted Average Exercise Price, Exercisable at end of period | $ / shares	$ 1.44
Outstanding at end of period	5 years 10 months 24 days
Exercisable at end of period	5 years 10 months 24 days
Intrinsic value, Outstanding at end of year | $	$ 375,250
Intrinsic value, Expected to vest | $
Intrinsic value, Exercisable at end of period | $	$ 375,250