Stock And Stock Options (Narrative) (Details)			3 Months Ended	12 Months Ended
	Mar. 21, 2016	Feb. 01, 2008 shares	Mar. 28, 2019 USD ($)	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	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 | $				$ 23,000	$ 14,000
Reverse stock split	0.1
Common stock, shares issued				10,639,290	10,619,924
Directors And CEO [Member]
Stock Options [Line Items]
Stock based compensation | $				$ 23,000	$ 14,000
Common stock, shares issued				19,366	23,503
Four Non-Executive Directors [Member]
Stock Options [Line Items]
Number of additional shares that may be granted				0	0
Voluntary Resignation [Member]
Stock Options [Line Items]
Stock Incentive Plan exercisable period				3 months
Subsequent Event [Member] | Directors And CEO [Member]
Stock Options [Line Items]
Stock based compensation | $			$ 4,714