Stock And Stock Options (Narrative) (Details)			12 Months Ended
	Mar. 21, 2016	Feb. 01, 2008 shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($)	Oct. 25, 2000 shares
Stock Options [Line Items]
Number of shares that may be granted						7,000,000
Number of additional shares that may be granted		3,500,000
Stock Incentive Plan term			10 years
Purchase price floor of fair market value			85.00%
Stock based compensation | $			$ 14,000	$ 17,000	$ 12,000
Expected volatility				122.70%	61.70%
Risk free interest rate				2.67%	2.53%
Reverse stock split	0.1
Common stock, shares issued			10,619,924	6,097,723
Stock Options [Member]
Stock Options [Line Items]
Stock based compensation | $				$ 3,000	$ 12,000
Directors And CEO [Member]
Stock Options [Line Items]
Stock based compensation | $			$ 14,000	$ 14,000
Common stock, shares issued			23,503	12,641
Four Non-Executive Directors [Member]
Stock Options [Line Items]
Number of additional shares that may be granted			0
Minimum [Member]
Stock Options [Line Items]
Option life remaining				3 months 18 days	3 months 18 days
Maximum [Member]
Stock Options [Line Items]
Option life remaining				4 years 9 months 18 days	4 years 9 months 18 days
Voluntary Resignation [Member]
Stock Options [Line Items]
Stock Incentive Plan exercisable period			3 months