Annual report pursuant to Section 13 and 15(d)

Balance Sheets

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Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Assets, Current [Abstract]    
Cash and cash equivalents $ 127,462 $ 10,171
Customer receivables, less allowances of $8,346 and $8,976, respectively 394,169 320,087
Other receivables 21,612 14,402
Prepaid expenses and other current assets 41,410 37,962
Total current assets 584,653 382,622
Property and equipment    
Revenue equipment 1,591,036 1,496,697
Land and structures 1,548,079 1,377,106
Other fixed assets 432,146 402,482
Leasehold improvements 8,668 8,699
Total property and equipment 3,579,929 3,284,984
Less: Accumulated depreciation (1,175,470) (1,043,582)
Net property and equipment 2,404,459 2,241,402
Goodwill 19,463 19,463
Other assets 59,849 52,760
Total assets 3,068,424 2,696,247
Liabilities, Current [Abstract]    
Accounts Payable, Current 73,729 89,216
Compensation and benefits 152,566 129,170
Claims and insurance accruals 49,949 47,417
Other accrued liabilities 24,805 22,833
Current maturities of long-term debt 50,000 0
Total current liabilities 351,049 288,636
Long-term debt 45,000 104,975
Other non-current liabilities 205,561 178,879
Deferred income taxes 189,960 272,599
Total long-term liabilities 440,521 556,453
Total liabilities 791,570 845,089
Shareholders equity    
Common stock - $0.10 par value, 140,000,000 shares authorized, 82,416,657 and 84,411,878 shares outstanding at December 31, 2016 and 2015, respectively 8,238 8,242
Capital in excess of par value 138,359 135,466
Retained earnings 2,130,257 1,707,450
Total shareholders' equity 2,276,854 1,851,158
Total liabilities and shareholders' equity $ 3,068,424 $ 2,696,247