Note 10 - Derivatives	9 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	NOTE 10 DERIVATIVES On April 1, 2021, the Company entered into an interest rate swap agreement with CIBC Bank USA to convert the variable LIBOR interest rate on a portion of its 2020 KWH Loan (as defined below in Note 11, "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 $11.0 million at September 30, 2021. At September 30, 2021, the fair value of the interest rate swap contract was a liability of $0.1 million, which is included in accrued expenses and other liabilities in the consolidated balance sheet. During the three and nine months ended September 30, 2021, the Company recognized a gain of less than $0.1 million and a loss of $0.1 million, respectively, related to the change in fair value of the interest rate swap, which is included in interest expense 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 each of the three and nine months ended September 30, 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 10 - Derivatives

9 Months Ended

Sep. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Text Block]

NOTE 10 DERIVATIVES

On April 1, 2021, the Company entered into an interest rate swap agreement with CIBC Bank USA to convert the variable LIBOR interest rate on a portion of its 2020 KWH Loan (as defined below in Note 11, "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 $11.0 million at September 30, 2021. At September 30, 2021, the fair value of the interest rate swap contract was a liability of $0.1 million, which is included in accrued expenses and other liabilities in the consolidated balance sheet. During the three and nine months ended September 30, 2021, the Company recognized a gain of less than $0.1 million and a loss of $0.1 million, respectively, related to the change in fair value of the interest rate swap, which is included in interest expense 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 each of the three and nine months ended September 30, 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.