CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 107,240	$ 54,196
Accounts receivable, trade, less allowance of $10,271 and $9,169, respectively	518,815	460,518
Other receivables	29,875	24,449
Inventories and supplies	14,527	11,140
Prepaid taxes, licenses and permits	17,699	17,549
Other current assets	74,459	63,361
Total current assets	762,615	631,213
Property and equipment, at cost:
Land	100,594	77,172
Buildings and improvements	309,241	287,331
Revenue equipment	2,169,172	1,910,874
Service equipment and other	306,634	282,448
Total property and equipment	2,885,641	2,557,825
Less – accumulated depreciation	1,060,365	944,582
Property and equipment, net	1,825,276	1,613,243
Goodwill	132,717	74,618
Intangible assets, net	81,502	55,315
Other non-current assets	295,145	229,324
Total assets	3,097,255	2,603,713
Current liabilities:
Accounts payable	124,483	93,987
Current portion of long-term debt	6,250	5,000
Insurance and claims accruals	78,620	72,594
Accrued payroll	49,793	44,333
Accrued expenses	20,358	28,758
Other current liabilities	30,016	24,011
Total current liabilities	309,520	268,683
Long-term debt, net of current portion	687,500	422,500
Other long-term liabilities	59,677	43,314
Insurance and claims accruals, net of current portion	244,946	237,220
Deferred income taxes	313,278	268,499
Total liabilities	1,614,921	1,240,216
Commitments and contingencies
Temporary equity - redeemable noncontrolling interest	38,699	35,947
Stockholders’ equity:
Common stock	805	805
Paid-in capital	129,837	121,904
Retained earnings	1,875,873	1,667,104
Accumulated other comprehensive loss	(11,292)	(20,604)
Treasury stock, at cost; 17,310,533 and 14,743,424 shares, respectively	(551,588)	(441,659)
Total stockholders’ equity	1,443,635	1,327,550
Total liabilities, temporary equity and stockholders’ equity	$ 3,097,255	$ 2,603,713