CONSOLIDATED AND CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income (loss)	$ (1,033)	$ 3,273
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	12,816	12,649
Amortization of deferred debt issuance costs	777	766
Amortization of debt discount	600	600
Deferred income tax expense	(214)	(326)
Gain on disposition or sale of property, plant and equipment, net	(479)	(208)
Equity in loss of DSM Semichem LLC	209	0
Non cash unit-based compensation	43	54
Change in current assets and liabilities, excluding effects of acquisitions and dispositions:
Accounts and other receivables	(10,836)	(4,726)
Inventories	7,289	2,412
Due from affiliates	4,054	1,889
Other current assets	(1,080)	705
Trade and other accounts payable	(2,658)	7,579
Product exchange payables	(226)	(173)
Due to affiliates	(2,509)	(332)
Income taxes payable	1,269	1,063
Other accrued liabilities	(14,913)	(15,365)
Change in other non-current assets and liabilities	872	249
Net cash provided by (used in) operating activities	(6,019)	10,109
Cash flows from investing activities:
Payments for property, plant and equipment	(5,875)	(11,670)
Payments for plant turnaround costs	(822)	(5,960)
Proceeds from sale of property, plant and equipment	479	235
Net cash used in investing activities	(6,218)	(17,395)
Cash flows from financing activities:
Payments of long-term debt	(42,500)	(57,500)
Payments under finance lease obligations	(4)	0
Proceeds from long-term debt	55,000	65,000
Payment of debt issuance costs	(63)	(15)
Cash distributions paid	(199)	(199)
Net cash provided by (used in) financing activities	12,234	7,286
Net increase in cash	(3)	0
Cash at beginning of period	55	54
Cash at end of period	52	54
Cash Flow, Noncash Investing and Financing Activities Disclosure
Non-cash additions to property, plant and equipment	$ 1,572	$ 2,706