Note 5 - Net Income Per Common Unit - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												9 Months Ended
	Sep. 30, 2024		Jun. 30, 2024	[2]	Mar. 31, 2024	[3]	Sep. 30, 2023		Jun. 30, 2023	[5]	Mar. 31, 2023	[6]	Sep. 30, 2024	Sep. 30, 2023
Net income attributable to common unitholders	$ 26,578						$ 42,951						$ 109,896	$ 135,199
Weighted average common units—basic (in shares)	13,049						12,635						12,971	12,613
Basic net income per common unit (in dollars per share)	$ 2.04						$ 3.4						$ 8.47	$ 10.72
Plus: dilutive effect of preferred units (in shares)	0						1,104						375	2,434
Plus: dilutive effect of warrants (in shares)	0						1,492						186	1,296
Plus: dilutive effect of unvested unit-based awards (in shares)	222						240						229	190
Weighted average common units—diluted (in shares)	13,271						15,471						13,761	16,533
Net income	$ 38,595	[1]	$ 46,064		$ 56,213		$ 63,846	[4]	$ 70,334		$ 79,275		$ 140,872	$ 213,455
Less: income attributable to preferred unitholders	(655)						(786)						(1,148)	(2,693)
Less: redemption of preferred units	(10,819)						(17,083)						(24,485)	(60,929)
Diluted net income attributable to common unitholders and the general partner	27,121						45,977						115,239	149,833
Less: diluted net income attributable to the general partner	(543)						(920)						(2,305)	(2,997)
Diluted net income attributable to common unitholders	$ 26,578						$ 45,057						$ 112,934	$ 146,836
Diluted net income per common unit (in dollars per share)	$ 2						$ 2.91						$ 8.21	$ 8.88

[1] Net income includes $0.66 million of income attributable to preferred unitholders that accumulated during the period, of which $0.64 million is allocated to the common unitholders and $0.01 million is allocated to the general partner.

[2] Net income includes $1.44 million of income attributable to preferred unitholders that accumulated during the period, of which $1.41 million is allocated to the common unitholders and $0.03 million is allocated to the general partner.

[3] Net income includes $2.15 million of income attributable to preferred unitholders that accumulated during the period, of which $2.11 million is allocated to the common unitholders and $0.04 million is allocated to the general partner.

[4] Net income includes $2.9 million of income attributable to preferred unitholders that accumulated during the period, of which $2.9 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.

[5] Net income includes $5.0 million of income attributable to preferred unitholders that accumulated during the period, of which $4.9 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.

[6] Net income includes $6.7 million of income attributable to preferred unitholders that accumulated during the period, of which $6.5 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.