Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
OPERATING ACTIVITIES
Net (loss) income	$ (27,869)	$ 9,680
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	137,596	147,919
Deferred income taxes	(25,016)	(11,903)
Stock-based compensation expense	742	928
Debt-related amortization	789	806
Gain on disposal of property and equipment	(1,510)	(15,873)
Changes in certain working capital items:
Trade receivables	2,723	25,874
Prepaid expenses and other current assets	2,297	4,604
Accounts payable, accrued liabilities, and accrued expenses	8,030	(25,176)
Accrued income taxes	8,778	(12,408)
Net cash provided by operating activities	106,560	124,451
INVESTING ACTIVITIES
Proceeds from sale of property and equipment	27,698	94,660
Purchases of property and equipment	(26,229)	(176,861)
Change in other assets	30	382
Net cash provided by (used in) investing activities	1,499	(81,819)
FINANCING ACTIVITIES
Payments of cash dividends	(3,151)	(3,161)
Shares withheld for employee taxes related to stock-based compensation	(383)	(213)
Repayments of finance leases and debt	(94,001)	(69,887)
Repurchases of common stock	(7,281)	0
Net cash used in financing activities	(104,816)	(73,261)
Net increase (decrease) in cash, cash equivalents and restricted cash	3,243	(30,629)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	41,188	64,478
End of period	44,431	33,849
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for interest expense	14,296	16,779
Cash paid during the period for income taxes, net of refunds	10,030	29,138
Noncash investing and financing activities:
Purchased property and equipment in accounts payable	12,086	22,270
Sold revenue equipment and property in other current assets	1,253	2,089
Common stock dividends declared in accounts payable	1,569	1,581
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents	30,739	20,101
Restricted cash included in other current assets	312	299
Restricted cash included in other assets	13,380	13,449
Total cash, cash equivalents and restricted cash	$ 44,431	$ 33,849