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Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer	$ 51,140	$ 116,752	$ 181,830	$ 276,241
Revenue from non-contractual arrangements	55	55	166	166
Revenue	51,140	116,752	181,830	276,241
Bill and Hold Revenue [Member]
Revenue from Contract with Customer	10,211	10,149	32,875	31,504
Revenue	10,211	10,149	32,875	31,504
Non-bill and Hold Revenue [Member]
Revenue from Contract with Customer	40,929	106,603	148,955	244,737
Revenue	40,929	106,603	148,955	244,737
Short-Term Contract with Customer [Member]
Revenue from Contract with Customer	8,966	8,291	26,941	28,318
Revenue	8,966	8,291	26,941	28,318
Long-Term Contract with Customer [Member]
Revenue from Contract with Customer	42,119	108,406	154,723	247,757
Revenue	$ 42,119	$ 108,406	$ 154,723	$ 247,757

X

- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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