Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 149,825	$ 106,588
Accounts receivable, net	335,595	276,755
Income tax receivable	11,859	0
Prepaid expenses and other	54,123	32,912
Total current assets	551,402	416,255
Property and Equipment, at cost	2,403,702	2,144,528
Less: accumulated depreciation	964,533	864,074
Net property and equipment	1,439,169	1,280,454
Operating Lease Right-of-Use Assets	107,456	107,781
Goodwill and Identifiable Intangibles, net	18,362	19,157
Other Noncurrent Assets	23,935	21,603
Total assets	2,140,324	1,845,250
Current Liabilities:
Accounts payable	114,697	114,010
Wages, vacation and employees’ benefits	79,193	73,109
Claims and insurance accruals	74,799	54,717
Other current liabilities	31,116	38,551
Current portion of long-term debt	15,914	19,396
Current portion of operating lease liability	22,750	21,565
Total current liabilities	338,469	321,348
Other Liabilities:
Long-term debt, less current portion	18,936	31,008
Operating lease liability, less current portion	87,388	88,409
Deferred income taxes	124,960	124,137
Claims, insurance and other	64,089	60,015
Total other liabilities	295,373	303,569
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, 26,462,463 and 26,336,589 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	26	26
Additional paid-in-capital	275,358	274,633
Deferred compensation trust, 70,578 and 94,627 shares of common stock at cost at September 30, 2022 and December 31, 2021, respectively	(5,237)	(4,101)
Retained earnings	1,236,335	949,775
Total stockholders’ equity	1,506,482	1,220,333
Total liabilities and stockholders’ equity	$ 2,140,324	$ 1,845,250