v3.26.1
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net income $ 41,737 $ 64,160
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization of property, equipment, and intangibles 392,706 392,509
Gain on sale of property and equipment (32,172) (33,784)
Impairments 882 10,612
Deferred income taxes 20,188 (33,897)
Non-cash lease expense 77,862 77,327
Gain on equity securities (195) (177)
Other adjustments to reconcile net income to net cash provided by operating activities 43,593 12,204
Increase (decrease) in cash resulting from changes in:    
Trade receivables (134,378) (53,883)
Income tax receivable (3,004) 9,244
Accounts payable 46,272 (63,469)
Accrued liabilities and claims accrual 62,664 (128)
Operating lease liabilities (77,637) (75,366)
Other assets and liabilities 11,840 20,577
Net cash provided by operating activities 450,358 325,929
Cash flows from investing activities:    
Proceeds from sale of property and equipment, including assets held for sale 120,764 158,366
Purchases of property and equipment (380,682) (330,614)
Expenditures on assets held for sale 0 (716)
Acquisition of leased assets 0 (10,425)
Other cash flows provided by (used in) investing activities 2,855 (6,228)
Net cash used in investing activities (257,063) (189,617)
Cash flows from financing activities:    
Repayments of finance leases and long-term debt (883,194) (148,948)
Borrowings on revolving lines of credit 62,000 165,000
Repayments on revolving lines of credit (688,000) (100,000)
Borrowings under accounts receivable securitization 0 30,000
Repayments of accounts receivable securitization 0 (50,000)
Proceeds from convertible senior notes 1,466,250 0
Purchase of capped calls (107,100) 0
Proceeds from common stock issued 3,187 3,409
Dividends paid (65,807) (58,985)
Other cash flows used in financing activities (21,712) (2,062)
Net cash used in financing activities (234,376) (161,586)
Net decrease in cash, restricted cash, and equivalents (41,081) (25,274)
Cash, restricted cash, and equivalents at beginning of period 308,740 370,230
Cash, restricted cash, and equivalents at end of period 267,659 344,956
Cash paid during the period for:    
Interest 49,999 75,140
Income taxes 4,383 41,281
Other Significant Noncash Transactions [Line Items]    
Equipment acquired included in accounts payable 39,188 39,614
Right-of-use assets obtained in exchange for operating lease liabilities 51,863 21,562
Property and equipment obtained in exchange for finance lease liabilities 66,809 3,138
Financing provided to independent contractors for equipment sold    
Other Significant Noncash Transactions [Line Items]    
Other non-cash investing and financing activities 618 314
Transfers from property and equipment to assets held for sale [Member]    
Other Significant Noncash Transactions [Line Items]    
Other non-cash investing and financing activities 42,628 71,904
Property and equipment obtained in exchange for debt and finance lease liabilities from operating lease liabilities    
Other Significant Noncash Transactions [Line Items]    
Property and equipment obtained in exchange for finance lease liabilities $ 0 $ 11,860