Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 68,374,000	$ 56,995,000
Receivables:
Trade, net	138,391,000	99,003,000
Other	3,681,000	6,971,000
Prepaid expenses and other	27,437,000	23,980,000
Total current assets	237,883,000	186,949,000
Property and equipment:
Revenue equipment, buildings and land, office equipment and other	992,400,000	956,476,000
Accumulated depreciation	(310,645,000)	(274,199,000)
Net property and equipment	681,755,000	682,277,000
Other noncurrent assets	1,483,000	1,464,000
Total assets	921,121,000	870,690,000
Current liabilities:
Accounts payable	48,463,000	20,150,000
Insurance and claims accruals	45,689,000	42,014,000
Accrued and other current liabilities	36,565,000	31,395,000
Total current liabilities	130,717,000	93,559,000
Deferred income taxes	129,972,000	125,163,000
Noncurrent operating lease liabilities	275,000	291,000
Total liabilities	260,964,000	219,013,000
Stockholders’ equity:
Preferred Stock, Value, Issued	0	0
Common stock, $.01 par value per share; 192,000,000 shares authorized; 81,014,564 shares at June 30, 2022, and 83,034,404 shares at December 31, 2021, issued and outstanding	810,000	830,000
Additional paid-in capital	44,867,000	85,718,000
Retained earnings	614,480,000	565,129,000
Total stockholders’ equity	660,157,000	651,677,000
Total liabilities and stockholders’ equity	$ 921,121,000	$ 870,690,000