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Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue from Contract with Customer	$ 22,689	$ 51,140	$ 75,900	$ 181,830
Revenue from non-contractual arrangements	55	55	166	166
Revenue	22,689	51,140	75,900	181,830
Bill and Hold Revenue [Member]
Revenue from Contract with Customer	10,650	10,211	25,085	32,875
Revenue	10,650	10,211	25,085	32,875
Non-bill and Hold Revenue [Member]
Revenue from Contract with Customer	12,039	40,929	50,815	148,955
Revenue	12,039	40,929	50,815	148,955
Short-Term Contract with Customer [Member]
Revenue from Contract with Customer	4,759	8,966	9,857	26,941
Revenue	4,759	8,966	9,857	26,941
Long-Term Contract with Customer [Member]
Revenue from Contract with Customer	17,875	42,119	65,877	154,723
Revenue	$ 17,875	$ 42,119	$ 65,877	$ 154,723

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

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