Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash	$ 12,397	$ 17,471
Accounts receivable, net	385,470	397,077
Operating supplies	17,313	15,995
Prepaid expenses	40,940	39,517
Other current assets	63,587	68,893
Total current assets	519,707	538,953
Property and equipment, net	$ 471,200	$ 400,661
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property and equipment, net
Right-of-use assets - operating leases	$ 66,445	$ 90,516
Marketable securities and other investments	59,498	41,686
Loss Contingency, Receivable	254,447	209,351
Other assets	9,948	13,204
Intangible assets, net	16,832	18,301
Goodwill	98,723	94,879
Total assets	1,496,800	1,407,551
Property and equipment	1,013,815	912,584
Current liabilities:
Current portion of long-term debt, finance lease liabilities and short-term debt	121,064	73,724
Current portion of operating lease liabilities	28,920	35,828
Accounts payable	66,565	57,560
Accrued expenses	87,871	96,860
Self-insurance accruals	85,176	58,509
Total current liabilities	389,596	322,481
Long-term debt	127,448	218,833
Senior unsecured notes	189,831	119,822
Lease liabilities - finance leases	28,299	12,221
Lease liabilities - operating leases	38,798	55,565
Self-insurance accruals	90,328	86,092
Litigation accrual	254,447	209,351
Other liabilities	21,453	14,046
Total liabilities	1,140,200	1,038,411
Redeemable common shares related to 401KSOP and Employee Stock Ownership Plan (ESOP) 7,737 and 8,114 shares at redemption value as of December 31, 2025 and 2024	213,548	195,551
Common shareholders' equity:
Common shares, $.50 par value, per share; 96,000 shares authorized; 78,090 and 77,713 shares issued and outstanding before deducting treasury shares and which excludes 7,737 and 8,114 shares subject to redemption as of December 31, 2025 and 2024	39,045	38,857
Additional paid-in capital	257,130	225,846
Common shares subscribed, unissued	19,145	21,100
Retained earnings	377,145	375,525
Accumulated other comprehensive loss	(5,611)	(6,773)
Stockholders' equity before treasury stock and common shares subscription receivable	686,854	654,555
Less: Cost of Common shares held in treasury; 46,358 shares in 2025 and 45,353 in 2024	533,924	468,132
Common shares subscription receivable	9,878	12,834
Total common shareholders' equity	143,052	173,589
Total liabilities and shareholders' equity	$ 1,496,800	$ 1,407,551
Redeemable stock, outstanding	7,737,260	8,114,134
Common stock, shares issued	78,090,260	77,713,386
Treasury stock, shares	46,358,257	45,352,738
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized	96,000,000	96,000,000