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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 245,029 $ 42,828
Accounts receivable, net of allowance for doubtful accounts of $2,312 and $2,323 at December 31, 2018 and 2017, respectively 558,817 580,354
Federal and state income taxes receivable 4,110 1,152
Inventory 65,579 69,167
Other 76,662 53,354
Total current assets 950,197 746,855
Property and equipment, net 4,002,549 4,254,730
Goodwill and intangible assets 477,640 687,072
Deposits on equipment purchases 12,040 16,351
Deferred tax assets, net   3,875
Other 27,440 49,973
Total assets 5,469,866 5,758,856
Current liabilities:    
Accounts payable 288,962 319,621
Federal and state income taxes payable 1,408 5
Accrued expenses 235,946 226,624
Total current liabilities 526,316 546,250
Borrowings under revolving credit facility   268,000
Long-term debt, net of debt discount and issuance costs of $5,795 and $1,217 at December 31, 2018 and 2017, respectively 1,119,205 598,783
Deferred tax liabilities, net 306,161 350,836
Other 12,761 12,494
Total liabilities 1,964,443 1,776,363
Commitments and contingencies (see Note 9)
Stockholders’ equity:    
Preferred stock, par value $.01; authorized 1,000,000 shares, no shares issued
Common stock, par value $.01; authorized 400,000,000 shares at December 31, 2018 and 300,000,000 shares at December 31, 2017 with 267,315,526 and 266,259,083 issued and 213,614,430 and 222,456,472 outstanding at December 31, 2018 and 2017, respectively 2,673 2,662
Additional paid-in capital 2,827,154 2,785,823
Retained earnings 1,753,557 2,105,897
Accumulated other comprehensive income 2,487 6,822
Treasury stock, at cost, 53,701,096 shares and 43,802,611 shares at December 31, 2018 and 2017, respectively (1,080,448) (918,711)
Total stockholders’ equity 3,505,423 3,982,493
Total liabilities and stockholders’ equity $ 5,469,866 $ 5,758,856