Convertible Notes (Narrative) (Details)		3 Months Ended
	May 08, 2018 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) shares	Mar. 31, 2018 USD ($)	Jul. 12, 2012 $ / shares	Jul. 12, 2012 $ / shares
Stock Issued During Period, Shares, Conversion of Units | shares	320
Subscription Price of Units	$ 10,000
Stock Issued During Period, Value, Conversion of Units	$ 3,200,000
Warrants Issued During Period, Warrants | shares	7,690
Interest Rate on Convertible Note	6.00%
Debt Instrument, Convertible, Conversion Price | (per share)	$ 0.80			$ 1.01	$ 1.35
Sale of Stock, Price Per Share | $ / shares	$ 0.80
Commission Paid to Agents	$ 157,800
Stock Issued During Period, Shares, Issued for Services | shares	243,275
Equity Issuance, Per Share Amount | $ / shares	$ 0.80
Warrants Issued During Period, Value	$ 50,000
Accretion Expense		$ 120,000	$ 73,000
Financing Interest Expense		$ 24,000
Convertible Debt Securities [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities | shares		7,940
Stock Issued During Period, Value, Conversion of Convertible Securities		$ 5,000
Interest Rate on Convertible Note		6.00%
Convertible debt [Member]
Transactions Costs of Convertible Notes		$ 111,000
Accretion Expense		$ 42,000