Changes in Stockholders' Deficit (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Balance, amount			$ (1,256,000)	$ (790,000)
Shares issued in connection with private placement*, amount				199,000
Shares issued to Cherokee in connection with loan, amount				21,000
Share based payment expense				2,000
Shares issued for board meeting attendance in lieu of cash, amount				31,000
Net loss	$ (245,000)	$ (21,000)	(801,000)	(346,000)
Shares issued to Lincoln Park for balance of Initial Purchase under the 2020 Lincoln Park Equity Line, amount			125,000
Shares issued to Lincoln Park for purchases under the 2020 Lincoln Park Equity Line, amount			439,000
Balance, amount	$ (1,493,000)	$ (883,000)	$ (1,493,000)	$ (883,000)
Common Stock
Balance, shares			37,703,476	32,680,984
Balance, amount			$ 377,000	$ 327,000
Shares issued in connection with private placement*, shares				2,842,856
Shares issued in connection with private placement*, amount				$ 28,000
Shares issued to Cherokee in connection with loan, shares				300,000
Shares issued to Cherokee in connection with loan, amount				$ 3,000
Shares issued for board meeting attendance in lieu of cash, shares				129,636
Shares issued for board meeting attendance in lieu of cash, amount				$ 1,000
Shares issued to Lincoln Park for balance of Initial Purchase under the 2020 Lincoln Park Equity Line, shares			500,000
Shares issued to Lincoln Park for balance of Initial Purchase under the 2020 Lincoln Park Equity Line, amount			$ 5,000
Shares issued to Lincoln Park for purchases under the 2020 Lincoln Park Equity Line, shares			4,400,000
Shares issued to Lincoln Park for purchases under the 2020 Lincoln Park Equity Line, amount			$ 44,000
Balance, shares	42,603,476	35,953,476	42,603,476	35,953,476
Balance, amount	$ 426,000	$ 359,000	$ 426,000	$ 359,000
Additional Paid-In Capital
Balance, amount			21,717,000	21,437,000
Shares issued in connection with private placement*, amount				171,000
Shares issued to Cherokee in connection with loan, amount				18,000
Share based payment expense				2,000
Shares issued for board meeting attendance in lieu of cash, amount				30,000
Shares issued to Lincoln Park for balance of Initial Purchase under the 2020 Lincoln Park Equity Line, amount			120,000
Shares issued to Lincoln Park for purchases under the 2020 Lincoln Park Equity Line, amount			395,000
Balance, amount	22,232,000	21,658,000	22,232,000	21,658,000
Retained Earnings (Accumulated Deficit)
Balance, amount			(23,350,000)	(22,554,000)
Net loss			801,000	(346,000)
Balance, amount	$ 24,151,000	$ (22,900,000)	$ 24,151,000	$ (22,900,000)