Note 11 - Subsequent Events	3 Months Ended
Mar. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	11. Subsequent Events The Company has evaluated subsequent events through the date which the condensed consolidated financial statements were available to be issued. Industrial Lease and Option to Purchase Agreement The Company has entered into an Industrial Lease Agreement with LINICO Corporation, a Nevada corporation, or LiNiCo, dated February 15, 2021 pursuant to which the Company has leased to LiNiCo its 136,750 square foot recycling facility at TRIC. The lease commenced April 1, 2021 and expires on March 31, 2023. During the lease term, LiNiCo has the option to purchase the land and facilities at a purchase price of $14.25 million if the option is exercised and the sale is completed by October 1, 2022 and $15.25 million if the option is exercised and the sale is completed after October 1, 2022 and prior to March 31, 2023. The purchase option is subject to LiNiCo’s payment of a nonrefundable deposit of $1.25 million by October 15, 2021 and a second nonrefundable deposit of $2 million by November 22, 2022, both of which will be applied towards the purchase price. The lease agreement is a triple-net lease pursuant to which LiNiCo is responsible for all fixed costs, including maintenance, utilities, insurance, and property taxes. The lease agreement provides for LiNiCo’s monthly lease payments starting at $68,000 per month and increasing to $100,640 in the last six months of the lease. The lease agreement allows the Company to retain the use of a portion of the facility for the Company's ongoing research and development activities, including operation of the lab and the use of office space. With respect to the portion of the facility that was damaged in the November 2019 fire, consisting of approximately 30,000 square feet, the Company is obligated to complete the clean-up of the damaged area, at the Company's expense, by July 31, 2021 and repair all damage to the damaged area, at the Company's expense, by November 15, 2021. With regard to the equipment on-site at TRIC, the Company has granted LiNiCo the right of first offer to purchase any equipment the Company offers for sale. The lease agreement contains customary representations, warranties and indemnities on the part of both parties. Insurance Payment Subsequent to the quarter ended March 31, 2021, the Company received an insurance payment of $1.4 million related to the November 2019 fire.

Note 11 - Subsequent Events

3 Months Ended

Mar. 31, 2021

11. Subsequent Events

The Company has evaluated subsequent events through the date which the condensed consolidated financial statements were available to be issued.

Industrial Lease and Option to Purchase Agreement

The Company has entered into an Industrial Lease Agreement with LINICO Corporation, a Nevada corporation, or LiNiCo, dated February 15, 2021 pursuant to which the Company has leased to LiNiCo its 136,750 square foot recycling facility at TRIC. The lease commenced April 1, 2021 and expires on March 31, 2023. During the lease term, LiNiCo has the option to purchase the land and facilities at a purchase price of $14.25 million if the option is exercised and the sale is completed by October 1, 2022 and $15.25 million if the option is exercised and the sale is completed after October 1, 2022 and prior to March 31, 2023. The purchase option is subject to LiNiCo’s payment of a nonrefundable deposit of $1.25 million by October 15, 2021 and a second nonrefundable deposit of $2 million by November 22, 2022, both of which will be applied towards the purchase price. The lease agreement is a triple-net lease pursuant to which LiNiCo is responsible for all fixed costs, including maintenance, utilities, insurance, and property taxes. The lease agreement provides for LiNiCo’s monthly lease payments starting at $68,000 per month and increasing to $100,640 in the last six months of the lease. The lease agreement allows the Company to retain the use of a portion of the facility for the Company's ongoing research and development activities, including operation of the lab and the use of office space.

With respect to the portion of the facility that was damaged in the November 2019 fire, consisting of approximately 30,000 square feet, the Company is obligated to complete the clean-up of the damaged area, at the Company's expense, by July 31, 2021 and repair all damage to the damaged area, at the Company's expense, by November 15, 2021. With regard to the equipment on-site at TRIC, the Company has granted LiNiCo the right of first offer to purchase any equipment the Company offers for sale. The lease agreement contains customary representations, warranties and indemnities on the part of both parties.

Insurance Payment

Subsequent to the quarter ended March 31, 2021, the Company received an insurance payment of $1.4 million related to the November 2019 fire.