Convertible Subordinated Notes Payable (Narrative) (Details) - USD ($)		3 Months Ended
	Apr. 01, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jun. 30, 2018
Converted accrued interest amount credited to common stock and additional paid-in capital		$ 141,000
Unamortized discounts recognized as interest expense		$ 89,000	$ 21,000
Common Stock [Member]
Number of converted shares of Convertible Notes		438,013
Converted accrued interest amount credited to common stock and additional paid-in capital		$ 141,000
Convertible Notes [Member]
Aggregate principal amount		2,795,000		$ 2,920,000	$ 2,920,000
Converted accrued interest amount credited to common stock and additional paid-in capital		141,000
Unamortized discounts recognized as interest expense		$ 34,000
Term		4 years
Interest rate		6.00%
Conversion price		$ 0.32
Notes payable, net of unamortized discounts		$ 359,000		392,000
Notes payable from related parties		$ 120,000		$ 120,000
Convertible Notes [Member] | Subsequent Event [Member]
Aggregate principal amount	$ 62,500
Convertible Notes [Member] | Common Stock [Member]
Price per share		$ 0.32
Convertible Notes [Member] | Common Stock [Member]
Aggregate principal amount		$ 125,000
Convertible Notes [Member] | Common Stock [Member] | Subsequent Event [Member]
Number of converted shares of Convertible Notes	197,111