Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 40,480	$ 56,763
Receivables:
Trade, net	85,149	83,033
Other	3,694	3,808
Prepaid expenses and other	18,576	19,924
Total current assets	147,899	163,528
Property and equipment:
Revenue equipment, buildings and land, office equipment and other	891,326	816,430
Accumulated depreciation	(261,474)	(228,200)
Net property and equipment	629,852	588,230
Other noncurrent assets	3,204	2,146
Total assets	780,955	753,904
Current liabilities:
Accounts payable	27,777	15,704
Insurance and claims accruals	30,647	28,103
Accrued and other current liabilities	26,506	28,166
Total current liabilities	84,930	71,973
Deferred income taxes	112,454	105,977
Noncurrent operating lease liabilities	714	0
Total liabilities	198,098	177,950
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; 54,687,065 shares at September 30, 2019, and 54,466,691 shares at December 31, 2018, issued and outstanding	547	545
Additional paid-in capital	78,840	76,814
Retained earnings	503,470	498,595
Total stockholders’ equity	582,857	575,954
Total liabilities and stockholders’ equity	$ 780,955	$ 753,904