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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
OPERATING ACTIVITIES:    
Net loss $ (17,770) $ (2,629)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation 44,315 37,640
Bad debt expense 379 2,406
Stock compensation-net of excess tax benefits 140 393
Provision for deferred income taxes (10,757) (831)
Gain on marketable equity securities (2,371) (1,434)
(Gain)/Loss on disposition of equipment (7,428) 101
Changes in operating assets and liabilities:    
Accounts receivable 3,623 (13,366)
Prepaid expenses, deposits, inventories, and other assets 2,663 5,589
Income taxes refundable 2,281 0
Income taxes payable 1,774 (590)
Trade accounts payable (382) 1,176
Accrued expenses and other liabilities 739 (185)
Net cash provided by operating activities 17,206 28,270
INVESTING ACTIVITIES:    
Purchases of property and equipment (18,149) (36,441)
Proceeds from disposition of equipment 29,235 17,707
Sales of marketable equity securities 743 2,631
Purchases of marketable equity securities (4,136) 0
Net cash provided (used) by investing activities 7,693 (16,103)
FINANCING ACTIVITIES:    
Borrowings under lines of credit 324,864 384,836
Repayments under lines of credit (324,864) (384,836)
Borrowings of long-term debt 30,000 0
Repayments of long-term debt (39,801) (35,538)
Borrowings under margin account 1,821 0
Repayments under margin account (1,136) 0
Repurchases of common stock (14,928) (5,259)
Net cash used in financing activities (24,044) (40,797)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 855 (28,630)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -Beginning of period 68,060 100,614
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -End of period 68,915 71,984
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Interest 7,985 6,193
Income taxes 886 669
NONCASH INVESTING AND FINANCING ACTIVITIES:    
Purchases of property and equipment included in accounts payable $ 362 $ 1,353