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CAPITAL STOCK, STOCK PLANS, WARRANTS AND STOCK BASED COMPENSATION (Details Narrative) - USD ($) |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 14, 2021 | Oct. 14, 2021 | Sep. 30, 2021 | Sep. 29, 2021 | Aug. 10, 2021 | Jul. 22, 2021 | Jul. 20, 2021 | May 04, 2021 | Feb. 04, 2021 | Apr. 02, 2019 | Jul. 27, 2017 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 | 30,000,000
Common stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001
Number of stock option shares granted |  |  |  |  |  |  |  |  |  |  |  | 381,000 |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,000
Subscription Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of sale shares issuance |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  | 290 | 3,884
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |
Stock issued during period for services, shares |  |  |  |  |  |  |  |  |  |  |  | 60,723 | 34,135
Number of common shares reserved for future issuance |  |  |  |  |  |  |  |  |  |  |  | 1,019,400 |
Second Milestone [Member] | Ferguson Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Options to purchase shares |  |  |  |  |  |  |  |  |  |  | 30,000 |  |
Third Milestone [Member] | Ferguson Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Options to purchase shares |  |  |  |  |  |  |  |  |  |  | 60,000 |  |
Employee and Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to unvested options consultant |  |  |  |  |  |  |  |  |  |  |  | $ 1,389,000 |
Weighted average term for unrecognized and unvested option to be recognized |  |  |  |  |  |  |  |  |  |  |  | 4 years 3 months 18 days |
Robert Ferguson [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to unvested options consultant |  |  |  |  |  |  |  |  |  |  |  | $ 289,000 |
Remaining stock option |  |  |  |  |  |  |  |  |  |  |  | 90,000 |
Loans payable |  |  |  |  |  |  |  |  |  | $ 2,500,000 |  |  |
Warrant to purchase |  |  |  |  |  |  |  |  |  | 60,000 |  |  |
Warrants exercise price |  |  |  |  |  |  |  |  |  | $ 3.51 |  |  |
Warrant exercisable, description |  |  |  |  |  |  |  |  |  | The Warrant is exercisable six months from April 1, 2019 and expires on April 1, 2024 and remains outstanding at December 31, 2021. The loan was paid-in-full by the Company in December 2020. |  |  |
2003 Stock Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  | 500,000 |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |
Stock options granted vesting period |  |  |  |  |  |  | 6 months |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  | 25.00% |  |  |  |  |  |
2003 Stock Plan [Member] | Director [Member] | Minimum [Member] | Election [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  | 6,000 |  |  |  |  |  |
2003 Stock Plan [Member] | Director [Member] | Minimum [Member] | Reelection [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  | 2,400 |  |  |  |  |  |
2003 Stock Plan [Member] | Director [Member] | Maximum [Member] | Election [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  | 20,000 |  |  |  |  |  |
2003 Stock Plan [Member] | Director [Member] | Maximum [Member] | Reelection [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  | 10,000 |  |  |  |  |  |
2003 Outside Directors Stock Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  |  |  |  |  |  | 599,854 |
Percentage of directors fees, description |  |  |  |  |  |  |  |  |  |  |  | The 2003 Plan continues to provide for the issuance to each Eligible Director a number of shares of the Company’s Common Stock in lieu of 65% or 100% (based on option elected by each director) of the fee payable to the Eligible Director for services rendered as a member of the Board. The number of shares issued is determined at 75% of the market value as defined in the 2003 Plan (the Company recognizes 100% of the market value of the shares issued). |
2003 Outside Directors Stock Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available for issuance |  |  |  |  |  |  |  |  |  |  |  | 1,600,000 |
2017 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares remaining available for issuance |  |  |  |  |  |  |  |  |  |  |  | 344,000 |
Stock option granted, description |  |  |  |  |  |  |  |  |  |  |  | The term of each stock option granted under the 2017 Plan shall be fixed by the Compensation Committee, but no stock options will be exercisable more than ten years after the grant date, or in the case of an ISO granted to a 10% stockholder, five years after the grant date. The exercise price of any ISO granted under the 2017 Plan to an individual who is not a 10% stockholder at the time of the grant shall not be less than the fair market value of the shares at the time of the grant, and the exercise price of any ISO granted to a 10% stockholder shall not be less than 110% of the fair market value at the time of grant. |
2017 Stock Option Plan [Member] | Officers and Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available for issuance |  |  |  |  |  |  |  |  |  |  |  | 1,140,000 |
2017 Stock Option Plan [Member] | Consultant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted |  |  |  |  |  |  |  |  |  |  | 100,000 |  |
Stock options, exercise price |  |  |  |  |  |  |  |  |  |  | $ 3.65 |  |
2010 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted |  |  |  | 50,000 |  |  |  |  |  |  |  |  |
Stock options, exercise price |  |  |  | $ 3.97 |  |  |  |  |  |  |  |  |
Stock options, expiration date |  |  |  | May 15, 2022 |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted contractual term | 6 years |  |  |  |  |  |  |  |  |  |  |  |
Vesting, description | one-fifth yearly vesting over a five-year period |  |  |  |  |  |  |  |  |  |  |  |
Exercise price | $ 7.005 |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted |  | 305,000 |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | Chief Executive Officer [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 50,000 |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | Chief Financial Officer [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | EVP of Strategic Initiatives [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 20,000 |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | EVP of Waste Treatment Operations [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
2017 Stock Plan [Member] | EVP of Nuclear and Technical Services [Member] | Incentive Stock Option Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock option shares granted | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
2003 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted vesting period |  |  |  |  |  | 6 months |  |  |  |  |  |  |
Number of stock option shares granted |  |  |  |  |  | 2,400 |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  |  | $ 6.70 |  |  |  |  |  |  |
Stock options granted contractual term |  |  |  |  |  | 10 years |  |  |  |  |  |  |
2003 Plan [Member] | NQSO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted vesting period |  |  |  |  | 6 months |  |  | 6 months | 6 months |  |  |  |
Number of stock option shares granted |  |  |  |  | 6,000 |  | 10,000 | 6,000 | 6,000 |  |  |  |
Stock options, exercise price |  |  |  |  | $ 7.29 |  | $ 5.93 | $ 7.50 | $ 7.00 |  |  |  |
Stock options granted contractual term |  |  |  |  | 10 years |  | 10 years | 10 years | 10 years |  |  |  |
Vesting, description |  |  |  |  |  |  | one-fourth vesting annually over a four-year period |  |  |  |  |  |
2017 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 3.15 |
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  | 290 | 2,000
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,300
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  |  | 1,884
2017 Stock Option Plan [Member] | First Separate Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.60
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  |  | 8,000
2017 Stock Option Plan [Member] | Second Separate Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options, exercise price |  |  |  |  |  |  |  |  |  |  |  | $ 3.15 |
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  |  | 2,500
2017 Stock Option Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock from cashless exercise |  |  |  |  |  |  |  |  |  |  |  | 500 |
2003 Outside Directors Stock Option Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of directors fees, description |  |  |  |  |  |  |  |  |  |  |  | As a member of the Board, each director elects to receive either 65% or 100% of the director’s fee in shares of our Common Stock. The number of shares received is calculated based on 75% of the fair market value of our Common Stock determined on the business day immediately preceding the date that the quarterly fee is due. |
2003 Outside Directors Stock Option Plan [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period for services, shares |  |  |  |  |  |  |  |  |  |  |  | 60,723 | 34,135
2003 Outside Directors Stock Plan [Member] | Portion of Director Fee Earned in Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  | $ 467,000 | $ 250,000

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