Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES:
Net income	$ 281	$ 5,231
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	18,935	16,497
Bad debt expense	1,967	302
Stock compensation-net of excess tax benefits	192	208
(Benefit) / Provision for deferred income taxes	(8)	(560)
(Gain) / Loss on marketable equity securities	(2,586)	288
Loss (Gain) on sale or disposition of equipment	240	(577)
Changes in operating assets and liabilities:
Accounts receivable	(13,253)	1,826
Prepaid expenses, deposits, inventories, and other assets	3,698	1,930
Income taxes payable	79	2,371
Trade accounts payable	355	(2,783)
Accrued expenses and other liabilities	(315)	9,474
Net cash provided by operating activities	9,585	34,207
INVESTING ACTIVITIES:
Purchases of property and equipment	(21,824)	(6,108)
Proceeds from disposition of equipment	12,022	7,192
Net cash (used in) / provided by investing activities	(9,802)	1,084
FINANCING ACTIVITIES:
Borrowings under line of credit	207,854	282,515
Repayments under line of credit	(207,854)	(282,515)
Repayments of long-term debt	(20,431)	(13,024)
Borrowings under margin account	0	18
Repayments under margin account	0	(383)
Repurchases of common stock	0	(3,516)
Net cash used in by financing activities	(20,431)	(16,905)
NET (DECREASE) / INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(20,648)	18,386
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -Beginning of period	100,614	74,087
CASH, CASH EQUIVALENTS AND RESTRICTED CASH -End of period	79,966	92,473
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest	2,933	2,353
Income taxes	27	0
NONCASH INVESTING AND FINANCING ACTIVITIES:
Purchases of property and equipment included in accounts payable	$ 843	$ 528