Note 1 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss		$ 200
Accounts Receivable, Credit Loss Expense (Reversal)	$ 0	200
Impairment of Long-Lived Assets to be Disposed of		0
Goodwill, Impairment Loss	$ 100	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	0
Long-Term Debt, Fair Value	$ 8,900
Bomay [Member]
Equity Method Investment, Ownership Percentage	40.00%	40.00%

Amount of allowance for credit loss on accounts receivable.

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