Convertible Notes (Narrative) (Details)		3 Months Ended		6 Months Ended
	May 08, 2018 USD ($) $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	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					$ 1.03	$ 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
Financing Interest Expense				$ 48,000	$ 14,000
Accretion Expense		$ 124,000	$ 94,000	$ 244,000	167,000
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				$ 86,000	$ 22,000