Note 14 - Subsequent Events (Details Textual) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | 19 Months Ended | 20 Months Ended | |
|---|---|---|---|---|---|---|
Jul. 29, 2021 |
Jun. 30, 2021 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jul. 29, 2021 |
|
| Proceeds from Insurance Settlement, Investing Activities | $ 0 | $ 7,625 | ||||
| AquaRefining Fire [Member] | ||||||
| Proceeds from Insurance Settlement, Investing Activities | $ 1,400 | $ 25,000 | ||||
| Subsequent Event [Member] | AquaRefining Fire [Member] | ||||||
| Proceeds from Insurance Settlement, Investing Activities | $ 5,250 | $ 30,250 | ||||
| X | ||||||||||
- Definition Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|