Annual report pursuant to Section 13 and 15(d)

Statements Of Cash Flows

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Statements Of Cash Flows (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash flows from operating activities:      
Net income $ 169,452,000 $ 139,470,000 $ 75,651,000
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 110,743,000 90,820,000 80,362,000
Loss on sale of property and equipment 78,000 1,263,000 758,000
Deferred income taxes 17,682,000 43,348,000 7,624,000
Changes in assets and liabilities      
Customer and other receivables, net (5,410,000) (40,414,000) (36,169,000)
Prepaid expenses and other assets (7,956,000) (2,952,000) (13,314,000)
Accounts payable 2,795,000 12,875,000 (4,247,000)
Compensation, benefits and other accrued liabilities 13,559,000 17,626,000 22,476,000
Claims and insurance accruals 7,458,000 6,696,000 3,831,000
Income taxes, net 9,264,000 3,224,000 (3,613,000)
Other liabilities 10,391,000 5,978,000 7,163,000
Net cash provided by operating activities 328,056,000 277,934,000 140,522,000
Cash flows from investing activities:      
Purchase of property and equipment (373,193,000) (250,768,000) (106,347,000)
Proceeds from sale of property and equipment 12,018,000 5,436,000 2,604,000
Net cash used in investing activities (361,175,000) (245,332,000) (103,743,000)
Cash flows from financing activities:      
Proceeds from issuance of long-term debt 412,000 96,010,000 0
Principal payments under long-term debt agreements (40,284,000) (40,382,000) (36,681,000)
Net (payments) proceeds on revolving line of credit 10,000,000 (66,230,000) 1,183,000
Proceeds from stock issuance, net of issuance costs 0 48,400,000 0
Other financing activities, net (2,000) 0 (2,000)
Net cash (used in) provided by financing activities (29,874,000) 37,798,000 (35,500,000)
(Decrease) increase in cash and cash equivalents (62,993,000) 70,400,000 1,279,000
Cash and cash equivalents at beginning of year 75,850,000 5,450,000 4,171,000
Cash and cash equivalents at end of year 12,857,000 75,850,000 5,450,000
Income taxes paid 74,932,000 34,579,000 44,893,000
Interest paid 13,728,000 14,011,000 13,561,000
Capitalized interest 1,963,000 895,000 682,000
Supplemental disclosure of noncash investing and financing activities:      
Acquisition of property and equipment by capital lease $ 1,094,000 $ 8,570,000 $ 1,183,000