CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT( Unaudited) - USD ($) shares in Thousands	Total	Preferred Stock Series C [Member]	Preferred Stock Series C1 [Member]	Preferred Stock Series C2 [Member]	Preferred Stock Series D [Member]	Preferred Stock Series E [Member]	Preferred Stock Series F [Member]	Preferred Stock Series F-2 [Member]	Common Stock [Member]	Additional Paid-In Capital	Treasury Stock [Member]	Retained Earnings (Accumulated Deficit)	Preferred Stock Series G [Member]
Balance, shares at Dec. 31, 2020			1	3	1	2			13,138
Balance, amount at Dec. 31, 2020	$ (10,855,000)	$ 105,000	$ 170,000	$ 531,000	$ 276,000	$ 1,639,000	$ 0	$ 0	$ 3,403,000	$ 123,109,000	$ (132,000)	$ (139,956,000)	$ 0
Series F preferred offering, shares							1
Series F preferred offering, amount	1,195,000	0	0	0	0	0	$ 1,195,000	$ 0	0	0	0	0	0
Series F-2 preferred offering, shares								1
Series F-2 preferred offering,Amount	404,000	0	0	0	0	0	0	$ 404,000	0	0	0	0	0
Conversion of debt and expenses for Series F-2 preferred stock, shares								2
Conversion of debt and expenses for Series F-2 preferred stock, Amount	2,559,000	0	0	0	0	0	0	$ 2,559,000	$ 0	0	0		0
Issuance of common stock for Series D preferred dividends, shares									61
Issuance of common stock for Series D preferred dividends, Amount	28,000	0	0	0	0	0	0	0	$ 0	28,000	0	0	$ 0
Series G preferred offering, shares													153
Series G preferred offering, Amount	0	0	0	0	0	0	0	0	0	0	0	0	$ 0
Series G redemption, shares													(91)
Series G redemption, Amount	0	0	0	0	0	0	0	0	$ 0	0	0	0	$ 0
Issuance of common stock to finders, shares									98
Issuance of common stock to finders, Amount	54,000	0	0	0	0	0	0	0	$ 0	54,000	0	0	0
Issuance of warrants to consultants	1,285,000	0	0	0	0	0	0	0	0	1,285,000	0	0	0
Conversions of warrants from liability to equity	1,755,000	0	0	0	0	0	0	0	0	1,755,000	0	0	0
Stock-based compensation	122,000	0	0	0	0	0	0	0	0	122,000	0	0	0
Accrued preferred dividends	(177,000)	0	0	0	0	0	0	0	0	0	0	(177,000)	0
Net loss	(1,694,000)	0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	0	0	(1,694,000)	$ 0
Stock-based compensation	122,000
Expense for warrants issued to consultants	477,000
Balance, shares at Jun. 30, 2021			1	3	1	2	1	3	13,297				62
Balance, amount at Jun. 30, 2021	(5,324,000)	105,000	$ 170,000	$ 531,000	$ 276,000	$ 1,639,000	$ 1,195,000	$ 2,963,000	$ 3,403,000	126,353,000	(132,000)	(141,827,000)	$ 0
Balance, shares at Mar. 31, 2021			1	3	1	2	1		13,180				153
Balance, amount at Mar. 31, 2021	(7,992,000)	105,000	$ 170,000	$ 531,000	$ 276,000	$ 1,639,000	$ 1,195,000	$ 0	$ 3,403,000	125,489,000	(132,000)	(140,668,000)	$ 0
Series F-2 preferred offering, shares								1
Series F-2 preferred offering,Amount	404,000	0	0	0	0	0	0	$ 404,000	$ 0	0	0	0	0
Conversion of debt and expenses for Series F-2 preferred stock, shares								2
Issuance of common stock for Series D preferred dividends, shares									19
Issuance of common stock for Series D preferred dividends, Amount	14,000	0	0	0	0	0	0	$ 0	$ 0	14,000	0	0	$ 0
Series G redemption, shares													(91)
Series G redemption, Amount	0	0	0	0	0	0	0	0	$ 0	0	0	0	$ 0
Issuance of common stock to finders, shares									98
Issuance of common stock to finders, Amount	54,000	0	0	0	0	0	0	0	$ 0	54,000	0	0	0
Issuance of warrants to consultants	736,000	0	0	0	0	0	0	0	0	736,000	0	0	0
Stock-based compensation	60,000	0	0	0	0	0	0	0	0	60,000	0	0	0
Accrued preferred dividends	(125,000)	0	0	0	0	0	0	0	0	0	0	(125,000)	0
Net loss	(1,034,000)	0	0	0	0	0	0	0	0	0	0	(1,034,000)	0
Series F preferred offering	0	0	0	0	0	0	0	0	0	0	0	0	0
Conversion of debt and expenses for Series F-2 preferred stock, Amount	2,559,000	0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 2,559,000	$ 0	0	0		$ 0
Balance, shares at Jun. 30, 2021			1	3	1	2	1	3	13,297				62
Balance, amount at Jun. 30, 2021	(5,324,000)	105,000	$ 170,000	$ 531,000	$ 276,000	$ 1,639,000	$ 1,195,000	$ 2,963,000	$ 3,403,000	126,353,000	(132,000)	(141,827,000)	$ 0
Balance, shares at Dec. 31, 2021			1	3	1	2	1	3	13,674
Balance, amount at Dec. 31, 2021	(5,445,000)	105,000	$ 170,000	$ 531,000	$ 276,000	$ 1,639,000	$ 1,187,000	$ 2,963,000	$ 3,403,000	126,800,000	(132,000)	(142,387,000)
Accrued preferred dividends	(629,000)	0	0	0	0	0	0	0	0	0	0	(629,000)
Net loss	(1,432,000)	0	0	0	0	0	0	0	$ 0	0	0	(1,432,000)
Common stock warrants exercised, shares									5,128
Common stock warrants exercised, Amount	846,000	0	0	0	0	0	0	0	$ 5,000	841,000	0	0
Issuance of common stock for payment of Series D preferred dividends, shares									48
Issuance of common stock for payment of Series D preferred dividends, Amount	29,000	0	0	0	0	0	0	0	$ 0	29,000	0	0
Issuance of common stock for payment of Series E preferred dividends, shares									64
Issuance of common stock for payment of Series E preferred dividends, Amount	34,000	0	0	0	0	0	0	0	$ 0	34,000	0	0
Issuance of common stock for payment of Series F preferred dividends, shares									161
Issuance of common stock for payment of Series F preferred dividends, Amount	107,000	0	0	0	0	0	0	0	$ 0	107,000	0	0
Issuance of common stock for payment of Series F-2 preferred dividends, shares									114
Issuance of common stock for payment of Series F-2 preferred dividends, Amount	75,000	0	0	0	0	0	0	0	$ 0	75,000	0	0
Issuance of common stock for payment of interest, shares									121
Issuance of common stock for payment of interest, Amount	81,000	0	0	0	0	0	0	0	$ 0	81,000	0	0
Issuance of common stock for Series F and Series F-2 one-time 15% dividends, shares									624
Issuance of common stock for Series F and Series F-2 one-time 15% dividends, Amount	400,000	0	0	0	0	0	0	0	$ 1,000	399,000	0	0
Conversion of Series D preferred stock to common stock, shares									975
Conversion of Series D preferred stock to common stock, Amount	1,000	0	0	0	(117,000)	$ 0	0	0	$ 1,000	117,000	0	0
Conversion of Series E preferred stock to common stock shares						(1)			3,390
Conversion of Series E preferred stock to common stock, Amount	0	0	0	0	0	$ (800,000)	0	0	$ 3,000	797,000	0	0
Conversion of Series F preferred stock to common stock, shares									1,420
Conversion of Series F preferred stock to common stock, Amount	0	0	0	0	0	0	(295,000)	0	$ 1,000	294,000	0	0
Conversion of Series F-2 preferred stock to common stock, shares									1,864
Conversion of Series F-2 preferred stock to common stock, amount	0	0	0	0	0	0	0	(427,000)	$ 2,000	425,000	0	0
Stock-based compensation	88,000	0	0	0	0	0	0	0	0	88,000	0	0
Expense for warrants issued to consultants	79,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	79,000	0	0
Balance, shares at Jun. 30, 2022		1	1	3	1	1	1	3	27,583
Balance, amount at Jun. 30, 2022	(5,766,000)	$ 105,000	$ 170,000	$ 531,000	$ 159,000	$ 839,000	$ 892,000	$ 2,536,000	$ 3,416,000	130,166,000	(132,000)	(144,448,000)
Balance, shares at Mar. 31, 2022			1	3	1	1	1	3	22,315
Balance, amount at Mar. 31, 2022	(4,988,000)	105,000	$ 170,000	$ 531,000	$ 276,000	$ 914,000	$ 1,174,000	$ 2,963,000	$ 3,411,000	129,041,000	(132,000)	(143,441,000)
Stock-based compensation	44,000	0	0	0	0	0	0	0	0	44,000	0	0
Accrued preferred dividends	(8,000)	0	0	0	0	0	0	0	0	0	0	(81,000)
Net loss	(926,000)	0	0	0	0	0	0	0	0	0	0	(926,000)
Issuance of common stock for payment of Series D preferred dividends, Amount	13,000	0	0	0	0	0	0	0	$ 0	13,000	0	0
Issuance of common stock for payment of Series E preferred dividends, shares									51
Issuance of common stock for payment of Series F preferred dividends, Amount	2,000	0	0	0	0	0	0	0	$ 0	2,000	0	0
Issuance of common stock for payment of Series F-2 preferred dividends, Amount	12,000	0	0	0	0	0	0	0	$ 0	12,000	0	0
Conversion of Series D preferred stock to common stock, shares									975
Conversion of Series D preferred stock to common stock, Amount	1,000	0	0	0	(117,000)	0	0	0	$ 1,000	117,000	0	0
Conversion of Series E preferred stock to common stock shares									320
Conversion of Series E preferred stock to common stock, Amount	0	0	0	0	0	(75,000)	0	0	$ 0	75,000	0	0
Conversion of Series F preferred stock to common stock, shares									1,360
Conversion of Series F-2 preferred stock to common stock, shares									1,864
Common stock warrants exercised, shares									650
Common stock warrants exercised, amount	130,000	0	0	0	0	0	0	0	$ 1,000	129,000	0	0
Issuance of common stock for payment of Series D preferred dividends, shares									25
Issuance of common stock for payment of Series E preferred dividends, Amount	26,000	0	0	0	0	0	0	0	$ 0	26,000	0	0
Issuance of common stock for payment of Series F preferred dividends, shares									4
Issuance of common stock for payment of Series F-2 preferred dividends, shares									19
Conversion of Series F preferred stock to common stock, amount	1,000	0	0	0	0	0	(282,000)	0	$ 1,000	282,000	0	0
Conversion of Series F-2 preferred stock to common stock	0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ (427,000)	$ 2,000	425,000	0	0
Balance, shares at Jun. 30, 2022		1	1	3	1	1	1	3	27,583
Balance, amount at Jun. 30, 2022	$ (5,766,000)	$ 105,000	$ 170,000	$ 531,000	$ 159,000	$ 839,000	$ 892,000	$ 2,536,000	$ 3,416,000	$ 130,166,000	$ (132,000)	$ (144,448,000)