Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 80,528	$ 80,600
Trade, net	111,577	120,702
Other	10,646	7,218
Prepaid expenses and other	29,208	27,320
Total current assets	231,959	235,840
Property and equipment:
Revenue equipment, buildings and land, office equipment and other	1,122,659	1,074,832
Accumulated depreciation	(352,139)	(346,665)
Net property and equipment	770,520	728,167
Other noncurrent assets	1,605	1,672
Total assets	1,004,084	965,679
Current liabilities:
Accounts payable	36,107	37,299
Insurance and claims accruals	47,665	45,747
Accrued and other current liabilities	47,248	41,264
Total current liabilities	131,020	124,310
Deferred income taxes	132,737	137,041
Noncurrent operating lease liabilities	307	409
Total liabilities	264,064	261,760
Stockholders’ equity:
Preferred stock, $.01 par value per share; 2,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $.01 par value per share; 192,000,000 shares authorized; 81,301,468 shares at June 30, 2023, and 81,115,132 shares at December 31, 2022, issued and outstanding	813	811
Additional paid-in capital	48,663	47,188
Retained earnings	690,544	655,920
Total stockholders’ equity	740,020	703,919
Total liabilities and stockholders’ equity	$ 1,004,084	$ 965,679