Domestic And Foreign Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Change in valuation allowance		$ 5,846,000	$ (3,443,000)	$ (291,000)
Unrecognized tax benefits		$ 0	$ 0	$ 0
Tax provision at statutory rate		34.00%	34.00%	34.00%
Forecast [Member]
Operating Loss Carryforwards [Line Items]
Tax provision at statutory rate	21.00%
United States IRS [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward		$ 23,725,000
Net operating loss carryforwards expiration date		Jan. 31, 2022
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward		$ 9,374,000
Net operating loss carryforwards expiration date		Jan. 31, 2017