Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax reconciliation, Permanent difference	$ (1,000)	$ (3,000)	$ (304,000)
Valuation allowance	16,569,000	14,926,000	$ 790,000
Federal net operating loss carryforwards	26,400,000
Estimated Net Operating Losses Exceed Gross Financial Reporting Amount [Member]
Federal net operating loss carryforwards	$ 1,800,000	$ 1,800,000