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Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue from Contract with Customer	$ 35,673	$ 72,409	$ 53,211	$ 130,690
Revenue from non-contractual arrangements	56	56	111	111
Revenue	35,673	72,409	53,211	130,690
Bill and Hold Revenue [Member]
Revenue from Contract with Customer	9,845	11,020	14,435	22,664
Revenue	9,845	11,020	14,435	22,664
Non-bill and Hold Revenue [Member]
Revenue from Contract with Customer	25,828	61,389	38,776	108,026
Revenue	25,828	61,389	38,776	108,026
Short-Term Contract with Customer [Member]
Revenue from Contract with Customer	3,129	8,735	5,098	17,975
Revenue	3,129	8,735	5,098	17,975
Long-Term Contract with Customer [Member]
Revenue from Contract with Customer	32,488	63,618	48,002	112,604
Revenue	$ 32,488	$ 63,618	$ 48,002	$ 112,604

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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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