Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 100,614,000	$ 74,087,000
Accounts receivable—net:
Trade, less current estimated credit loss of $7,717 and $5,381, respectively	80,604,000	134,739,000
Other	7,203,000	6,263,000
Inventories	2,321,000	2,570,000
Prepaid expenses and deposits	13,213,000	15,729,000
Marketable equity securities	43,203,000	41,728,000
Income taxes refundable	3,883,000	5,650,000
Total current assets	251,041,000	280,766,000
PROPERTY AND EQUIPMENT:
Land	23,078,000	19,718,000
Structures and improvements	43,552,000	35,534,000
Revenue equipment	689,173,000	637,510,000
Office furniture and equipment	15,328,000	13,157,000
Total property and equipment	771,131,000	705,919,000
Accumulated depreciation	(266,412,000)	(242,324,000)
Net property and equipment	504,719,000	463,595,000
OTHER ASSETS	4,697,000	4,801,000
TOTAL ASSETS	760,457,000	749,162,000
CURRENT LIABILITIES:
Accounts payable	62,652,000	48,917,000
Accrued expenses and other liabilities	16,799,000	34,233,000
Current maturities of long-term debt	57,645,000	58,815,000
Total current liabilities	137,096,000	141,965,000
Long-term debt—less current portion	204,064,000	205,466,000
Deferred income taxes	104,331,000	101,445,000
Other long-term liabilities	750,000	103,000
Total liabilities	446,241,000	448,979,000
COMMITMENTS AND CONTINGENCIES (Note 16)
STOCKHOLDERS’ EQUITY
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued	0	0
Common stock, $.01 par value, 50,000,000 shares authorized; 22,317,671 and 22,293,687 shares issued; 22,021,341 and 22,166,450 shares outstanding at December 31, 2023 and 2022, respectively	223,000	223,000
Additional paid-in capital	40,825,000	40,472,000
Accumulated Other Comprehensive Income	0	0
Treasury stock, at cost; 296,330 and 127,237 shares at December 31, 2023 and 2022, respectively	(8,736,000)	(4,000,000)
Retained earnings	281,904,000	263,488,000
Total stockholders’ equity	314,216,000	300,183,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 760,457,000	$ 749,162,000