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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
OPERATING ACTIVITIES:    
Net loss $ (23,356) $ (217)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation 64,119 55,381
Bad debt expense 1,618 2,445
Stock compensation-net of excess tax benefits 325 550
Provision for deferred income taxes (8,516) (136)
Gain on marketable equity securities (2,455) (3,907)
Gain on disposition of equipment (11,431) (109)
(Gain)/loss on sale of marketable equity securities (1,308) 108
Changes in operating assets and liabilities:    
Accounts receivable 1,454 (14,264)
Prepaid expenses, deposits, inventories, and other assets 3,371 5,631
Income taxes refundable (245) 0
Income taxes payable 0 (441)
Trade accounts payable (961) (463)
Accrued expenses and other liabilities 527 (786)
Net cash provided by operating activities 23,142 43,792
INVESTING ACTIVITIES:    
Purchases of property and equipment (21,572) (85,577)
Proceeds from disposition of equipment 43,903 27,849
Sales of marketable equity securities 3,818 2,797
Purchases of marketable equity securities (4,238) 0
Net cash provided (used in) by investing activities 21,911 (54,931)
FINANCING ACTIVITIES:    
Borrowings under lines of credit 474,768 569,628
Repayments under lines of credit (474,768) (569,628)
Borrowings of long-term debt 30,000 11,894
Repayments of long-term debt (59,425) (48,032)
Borrowings under margin account 1,807 0
Repayments under margin account (1,807) 0
Repurchases of common stock (14,928) (5,259)
Net cash used in financing activities (44,353) (41,397)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 700 (52,536)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -Beginning of period 68,060 100,614
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -End of period 68,760 48,078
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Interest 12,504 9,146
Income taxes 886 673
NONCASH INVESTING AND FINANCING ACTIVITIES:    
Purchases of property and equipment included in accounts payable $ 3,034 $ 856