Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 19,473	$ 296,215
Accounts receivable, less allowances of $4,224 in 2024 and $4,427 in 2023	322,991	311,742
Prepaid expenses	35,497	32,648
Income tax receivable	44,107	1,005
Other current assets	13,701	7,084
Total current assets	435,769	648,694
Property and Equipment, at cost	3,790,069	2,881,800
Less-accumulated depreciation and amortization	1,233,134	1,118,492
Net property and equipment	2,556,935	1,763,308
Operating Lease Right-of-Use Assets	126,828	118,734
Goodwill and Identifiable Intangibles, net	16,442	17,296
Other Noncurrent Assets	30,883	35,533
Total assets	3,166,857	2,583,565
Current Liabilities:
Accounts payable	114,560	141,877
Wages, vacation and employees’ benefits	49,953	75,514
Claims and insurance accruals	43,126	41,641
Other current liabilities	38,036	27,094
Current portion of long-term debt	5,313	10,173
Current portion of operating lease liability	27,372	25,757
Total current liabilities	278,360	322,056
Other Liabilities:
Long-term debt, less current portion	194,981	6,315
Operating lease liability, less current portion	96,798	96,462
Deferred income taxes	219,062	155,841
Claims, insurance and other	66,385	61,397
Total other liabilities	577,226	320,015
Commitments and Contingencies (Note 3)	0	0
Stockholders’ Equity:
Preferred stock, $0.001 par value, 50,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized, 26,549,512 and 26,4549,372 shares issued and outstanding at December 31, 2024 and 2023, respectively	27	27
Additional paid-in-capital	295,106	285,092
Deferred compensation trust, 70,100 and 69,672 shares of common stock at cost at December 31, 2024 and 2023, respectively	(7,981)	(5,679)
Retained earnings	2,024,119	1,662,054
Total stockholders’ equity	2,311,271	1,941,494
Total liabilities and stockholders’ equity	$ 3,166,857	$ 2,583,565