Stockholders' Deficit (Tables)

12 Months Ended

Dec. 31, 2021

Stockholders' Equity Note [Abstract]

Schedule of stock compensation plans information summary

	2011 Stock Compensation Plan
Shares authorized for issuance	1,750
Option vesting period	Immediate/Quarterly over 3 years
Date adopted by shareholders	November 2011
Option term	7 Years
Options outstanding	1,338
Options exercisable	1,166
Weighted average exercise price	$0.87

Schedule of fair value calculations for the stock options granted

	Year Ended December 31, 2020
Risk free interest rate	0.18%
Expected life (years)	6.4
Expected volatility	164.00%
Expected dividends	None
Estimated average forfeiture rate	2.15%

Schedule of allocation of stock-based compensation expense

	December 31, 2021		December 31, 2020
Research and development	$	-	$	7
General and administrative		44		73
Director options and consultants		18		23
Stock-based compensation expense included in operating expenses	$	63	$	103

Schedule of warrants outstanding and exercisable

	December 31, 2021								December 31, 2020
	Shares		Weighted Average Exercise Price per share		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Life (in years)		Shares			Weighted Average Exercise Price per share		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Life (in years)
Outstanding at beginning of period		1,338	$	0.87	$	1,386				1,077		$	1.59	$	-
Granted			$	-	$	-				290		$	0.50	$	-
Forfeited/ Cancelled			$	-	$	-				(29	)	$	23.63	$	-
Outstanding at period end		1,338	$	0.87	$	1,386		3.59		1,338		$	0.86	$	-		4.97
Options vested and exercisable at period end		1,165	$	0.93	$	1,143		3.30		957		$	0.97	$	-		4.75
Weighted average grant-date fair value of options granted during the period	$	0.78							$	0.43

Schedule of significant ranges of outstanding and exercisable options

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Options Outstanding	Weighted Average Remaining Contractual Life (in years)		Weighted Average Exercise Price per share	Number Outstanding		Weighted Average Exercise Price per share
$0.01 -$25.00	1,323	3.62	$	0.58	1,050	$	0.63
$25 – $625	15	0.08	$	26.81	27	$	38.56
	1,338	3.59	$	0.87	1,077	$	1.59

Schedule of the company's non-vested shares

Non-vested Shares	Shares			Weighted Average Grant-Date Fair Value per share
Non-vested at January 1, 2020		381			417
Granted					290
Canceled/Forfeited		-			-
Vested		(208	)		(326	)
Non-vested at December 31, 2021		172			381

Schedule of warrant activity

	December 31, 2021				December 31, 2020
	Shares		Weighted Average Exercise Price per share		Shares		Weighted Average Exercise Price per share
Outstanding at beginning of period		3,000	$	1.52		2,536	$	1.52
Issued					$	465	$	0.50
Expired		1,550			$	-	$	-
Outstanding at end of period		1,450	$	0.50		3,001	$	1.37
Exercisable at end of period		1,450	$	0.50		3,001	$	1.37

Schedule of warrants outstanding and exercisable

Number of Shares Outstanding and Exercisable	Weighted Average Remaining Life (in years)		Weighted Average Exercise Price per share
985		0.10	$	0.50
465		1.64	$	0.50
1,450		0.59	$	0.50