Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net (loss) income	$ (9,457)	$ 2,032
Adjustments to reconcile net income to net cash from operating activities:
Accretion of asset retirement obligations	402	354
Depreciation, depletion, and amortization	17,542	15,220
Amortization of debt issuance costs	353	207
Stock-based compensation	3,361	4,702
(Gain)/loss on disposal of equipment		(23)
Deferred income taxes	(4,668)	(1,928)
Changes in operating assets and liabilities:
Accounts receivable	21,460	(6,673)
Prepaid expenses and other current assets	5,429	6,462
Inventories	(12,765)	(4,117)
Other assets and liabilities	(1,253)	(494)
Accounts payable	9,809	6,301
Accrued liabilities	(4,174)	3,145
Net cash provided by operating activities	26,039	25,188
Cash flows from investing activities:
Capital expenditures	(18,473)	(18,730)
Maben preparation plant capital expenditures	(1,840)
Capitalized interest	(527)	(244)
Other	(1,416)	309
Net cash used for investing activities	(22,256)	(18,665)
Cash flows from financing activities:
Proceeds from borrowings	19,000	51,500
Payments of debt issuance costs (senior note debt)	(67)
Payment of dividends	(2,476)	(8,319)
Repayment of borrowings	(3,110)	(55,417)
Repayments of insurance financing	(1,937)	(1,799)
Repayments of equipment finance leases	(2,056)	(2,077)
Shares surrendered for withholding taxes payable	(2,680)	(1,870)
Net cash provided by (used) for financing activities	6,674	(17,982)
Net change in cash and cash equivalents and restricted cash	10,457	(11,459)
Cash and cash equivalents and restricted cash, beginning of period	33,823	42,781
Cash and cash equivalents and restricted cash, end of period	44,280	31,322
Non-cash investing and financing activities:
Leased assets obtained under new financing leases	8,831	8,790
Capital expenditures included in accounts payable and accrued liabilities	13,060	6,708
Accrued dividends and dividend equivalents payable	$ 32	$ 33