Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements Of Cash Flows

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Condensed Statements Of Cash Flows - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Statement of Cash Flows [Abstract]    
Net income $ 272,767 $ 164,210
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 109,716 100,736
Loss on sale of property and equipment 785 485
Share-based compensation 2,275 1,590
Other operating activities, net 39,148 (28,507)
Net cash provided by operating activities 424,691 238,514
Cash flows from investing activities:    
Purchase of property and equipment (292,269) (188,318)
Proceeds from sale of property and equipment 528 7,389
Net cash used in investing activities (291,741) (180,929)
Cash flows from financing activities:    
Principal payments under long-term debt agreements (50,000) 0
Net payments on revolving line of credit 0 (9,975)
Payments for share repurchases (47,394) (7,135)
Dividends paid (21,373) (16,469)
Other financing activities, net (1,074) (344)
Net cash provided by (used in) financing activities (119,841) (33,923)
(Decrease) increase in cash and cash equivalents 13,109 23,662
Cash and cash equivalents at beginning of period 127,462 10,171
Cash and cash equivalents at end of period $ 140,571 $ 33,833