Note 10 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Proceeds from Sale of Debt Securities, Available-for-Sale		$ 702	$ 0
OCI, Debt Securities, Available-for-Sale, Transfer from Held-to-Maturity, Gain (Loss), before Adjustment and Tax	$ 100	200
Debt Security, Corporate, Non-US [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.75%
PEMEX [Member]
Accounts Receivable, before Allowance for Credit Loss, Current	7,800	$ 7,800		$ 8,600
Debt Securities, Available-for-Sale, Sold at Par Value	700
Proceeds from Sale of Debt Securities, Available-for-Sale	$ 700

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(1))
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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with interest rate reset through auction process, sold at par value.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Amount, before tax and adjustment, of unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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