CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues:
Revenues		$ 180,676	$ 184,531	$ 373,219	$ 365,361
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		78,504	76,811	168,080	154,458
Expenses:
Operating expenses	[1]	64,382	65,358	128,836	129,292
Selling, general and administrative	[1]	10,882	10,701	22,656	19,614
Depreciation and amortization		12,638	12,687	25,454	25,336
Total costs and expenses		166,406	165,557	345,026	328,700
Gain on disposition or sale of property, plant and equipment		613	953	1,092	1,161
Operating income		14,883	19,927	29,285	37,822
Other income (expense):
Interest expense, net		(14,608)	(14,377)	(28,715)	(28,219)
Equity in loss of DSM Semichem LLC		(616)	0	(825)	0
Other, net		18	2	16	18
Total other expense		(15,206)	(14,375)	(29,524)	(28,201)
Net income before taxes		(323)	5,552	(239)	9,621
Income tax expense		(2,084)	(1,772)	(3,201)	(2,568)
Net income (loss)		(2,407)	3,780	(3,440)	7,053
Less general partner's interest in net income (loss)		(48)	76	(69)	141
Less income (loss) allocable to unvested restricted units		(10)	16	(14)	28
Limited partners' interest in net income (loss)		$ (2,349)	$ 3,688	$ (3,357)	$ 6,884
Net income (loss) per unit attributable to limited partners - basic (in dollars per share)		$ (0.06)	$ 0.09	$ (0.09)	$ 0.18
Net income (loss) per unit attributable to limited partners - diluted (in dollars per share)		$ (0.06)	$ 0.09	$ (0.09)	$ 0.18
Weighted average limited partner units - basic (in shares)		38,892,347	38,832,222	38,887,692	38,833,039
Weighted average limited partner units - diluted (in shares)		38,892,347	38,891,375	38,887,692	38,872,192
Transportation
Revenues:
Revenues	[1]	$ 53,826	$ 57,676	$ 106,811	$ 115,983
Sulfur services
Revenues:
Revenues		4,073	3,477	8,296	6,954
Product sales
Revenues:
Revenues	[1]	100,373	101,003	214,159	197,532
Specialty products
Revenues:
Revenues	[1]	60,318	67,288	129,623	133,613
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	52,270	57,553	112,764	114,783
Sulfur services
Revenues:
Revenues	[1]	40,055	33,715	84,536	63,919
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	26,234	19,234	55,316	39,633
Terminalling and storage
Revenues:
Revenues	[1]	22,404	22,375	43,953	44,892
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	$ 0	$ 24	$ 0	$ 42

[1] Related Party Transactions Included Above Three Months EndedSix Months EndedJune 30,June 30,2025202420252024Revenues:*    Terminalling and storage$18,221 $18,078 $35,483 $36,627 Transportation7,320 8,318 15,290 16,919 Product Sales1,040 123 2,340 252 Costs and expenses:*Cost of products sold: (excluding depreciation and amortization)Specialty products7,277 8,368 13,287 14,941 Sulfur services3,187 2,919 6,308 5,912 Terminalling and storage— 24 — 42 Expenses:Operating expenses27,823 26,501 55,388 52,924 Selling, general and administrative8,135 8,638 16,027 15,501