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, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net income $ 98,808 $ 78,927
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 60,351 52,068
(Gain) loss on sale of property and equipment (2,332) 844
Deferred income taxes 2,067 (2,338)
Other operating activities, net (5,030) 14,921
Net cash provided by operating activities 153,864 144,422
Cash flows from investing activities:    
Purchase of property and equipment (156,354) (210,019)
Proceeds from sale of property and equipment 8,613 3,098
Net cash used in investing activities (147,741) (206,921)
Cash flows from financing activities:    
Proceeds from issuance of long-term debt 0 412
Principal payments under long-term debt agreements (36,290) (36,778)
Net proceeds (payments) from revolving line of credit 24,680 34,030
Net cash provided by (used in) financing activities (11,610) (2,336)
(Decrease) increase in cash and cash equivalents (5,487) (64,835)
Cash and cash equivalents at beginning of period 12,857 75,850
Cash and cash equivalents at end of period 7,370 11,015
Supplemental disclosure of noncash investing activities:    
Acquisition of property and equipment by capital lease $ 0 $ 1,094