Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 10,058	$ 488
Receivables:
Trade, net	67,174	69,199
Other	5,657	4,436
Prepaid expenses and other	17,635	19,307
Total current assets	100,524	93,430
Property and equipment:
Revenue equipment, buildings and land, office equipment and other	775,149	759,553
Accumulated depreciation	(206,943)	(201,728)
Net property and equipment	568,206	557,825
Other assets	1,854	2,493
Total assets	670,584	653,748
Current liabilities:
Accounts payable and accrued liabilities	46,103	41,230
Insurance and claims accruals	21,811	19,440
Total current liabilities	67,914	60,670
Long-term debt		7,886
Deferred income taxes	148,046	147,854
Total liabilities	215,960	216,410
Stockholders’ equity:
Preferred stock, $.01 par value per share; 2,000,000 shares authorized; no shares issued and outstanding
Common stock, $.01 par value per share; 96,000,000 shares authorized; 54,514,421 shares at June 30, 2017, and 54,391,525 shares at December 31, 2016, issued and outstanding	545	544
Additional paid-in capital	75,740	74,175
Retained earnings	378,339	362,619
Total stockholders’ equity	454,624	437,338
Total liabilities and stockholders’ equity	$ 670,584	$ 653,748

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.