Note 11 - Derivatives	12 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	NOTE 11 DERIVATIVES On April 1, 2021, the Company entered into an interest rate swap agreement with CIBC Bank USA to convert the variable London interbank offered interest rate for three-month U.S. dollar deposits ("LIBOR") interest rate on a portion of its 2020 KWH Loan (as defined below in Note 12, "Debt") to a fixed interest rate of 1.18%. The interest rate swap had an initial notional amount of $11.9 million and matures on February 29, 2024. The purpose of this interest rate swap, which is not designated as a cash flow hedge, is to reduce the Company's exposure to variability in cash flows from interest payments attributable to fluctuations in the variable interest rate associated with the 2020 KWH Loan. The Company has not elected hedge accounting for the interest rate swap. The interest rate swap is recorded in the consolidated balance sheet at fair value with changes in fair value recorded in the consolidated statement of operations. The notional amount of the interest rate swap contract is $10.5 million at December 31, 2021. At December 31, 2021, the fair value of the interest rate swap contract was a liability of less than $0.1 million, which is included in accrued expenses and other liabilities in the consolidated balance sheet. During the year ended December 31, 2021, the Company recognized a loss of less than $0.1 million related to the change in fair value of the interest rate swap, which is included in interest expense not allocated to segments in the consolidated statement of operations and within cash flows from operating activities in the consolidated statement of cash flows. Net cash payments of less than $0.1 million were made during the year ended December 31, 2021, to settle a portion of the liabilities related to the interest rate swap agreement. These payments are reflected as cash outflows in the consolidated statements of cash flows within net cash used in operating activities.

Note 11 - Derivatives

12 Months Ended

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Text Block]

On April 1, 2021, the Company entered into an interest rate swap agreement with CIBC Bank USA to convert the variable London interbank offered interest rate for three-month U.S. dollar deposits ("LIBOR") interest rate on a portion of its 2020 KWH Loan (as defined below in Note 12, "Debt") to a fixed interest rate of 1.18%. The interest rate swap had an initial notional amount of $11.9 million and matures on February 29, 2024.

The purpose of this interest rate swap, which is not designated as a cash flow hedge, is to reduce the Company's exposure to variability in cash flows from interest payments attributable to fluctuations in the variable interest rate associated with the 2020 KWH Loan. The Company has not elected hedge accounting for the interest rate swap. The interest rate swap is recorded in the consolidated balance sheet at fair value with changes in fair value recorded in the consolidated statement of operations.

The notional amount of the interest rate swap contract is $10.5 million at December 31, 2021. At December 31, 2021, the fair value of the interest rate swap contract was a liability of less than $0.1 million, which is included in accrued expenses and other liabilities in the consolidated balance sheet. During the year ended December 31, 2021, the Company recognized a loss of less than $0.1 million related to the change in fair value of the interest rate swap, which is included in interest expense not allocated to segments in the consolidated statement of operations and within cash flows from operating activities in the consolidated statement of cash flows. Net cash payments of less than $0.1 million were made during the year ended December 31, 2021, to settle a portion of the liabilities related to the interest rate swap agreement. These payments are reflected as cash outflows in the consolidated statements of cash flows within net cash used in operating activities.