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Net number of non-option equity instruments granted to participants.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Note 15 - Stock-based Compensation (Details Textual) - USD ($)		12 Months Ended
	Apr. 01, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2021	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		99,460,000	2,450,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 0.06	$ 0.14
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance (in shares)		4,818,876
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares)		3,525,123
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in dollars per share)		$ 0.09
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Year)		3 years 5 months 15 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)		1,293,753
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)		4,818,876	2,585,500		7,204,672
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Ending Balance (in dollars per share)		$ 0.08
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		$ 0	$ 0
Share-based Payment Arrangement, Expense		$ 896,000	$ 263,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 0.06	$ 0.12
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount		$ 692,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		$ 0
Option Exchanged for RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)		76,477,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		76,477,500
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)		76,477,500
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Plan Modification, Incremental Cost		$ 1,308,000
Option Expired [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period (in shares)		20,749,124
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		80,977,500
Share-based Payment Arrangement, Plan Modification, Incremental Cost		$ 1,308,000
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)		80,977,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)		81,019,401	845,106	845,106
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)		262,629	2,164,351
Restricted Stock Units (RSUs) [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Month)	18 months
Restricted Stock Units (RSUs) [Member] \| Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		0	0
Director [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)		4,500,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		57.00%	57.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year)		3 years 3 months 29 days	3 years 3 months 29 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		1.37%	1.37%
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 0.030
Minimum [Member] \| Corporate Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		5.00%
Minimum [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		4.10%
Minimum [Member] \| All Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		15.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		99.00%	99.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year)		5 years 2 months 1 day	5 years 2 months 1 day
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		2.58%	2.58%
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 0.070
Maximum [Member] \| Corporate Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		10.00%
Maximum [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		10.00%
Maximum [Member] \| All Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate		25.00%
2021 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		63,747,077