Note 14 - Subsequent Events (Details Textual) - USD ($) $ in Thousands		9 Months Ended
	Mar. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Oct. 25, 2022	Feb. 15, 2021
Proceeds from Sale of Property, Plant, and Equipment, Total		$ 1,432	$ 275
Forecast [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 15,250
Recycling Facility at TRIC [Member]
Second Nonrefundable Deposit Subject to Purchase Option					$ 2,000
Subsequent Event [Member] \| Recycling Facility at TRIC [Member]
Second Nonrefundable Deposit Subject to Purchase Option				$ 2,000
First and Second Nonrefundable Deposit Subject to Purchase Option				$ 3,250