Quarterly report pursuant to Section 13 or 15(d)

Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidated Condensed Statements of Cash Flows (Detail)

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Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidated Condensed Statements of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net income (loss) $ 8,946 $ 46,434
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 61,792 55,578
Loss on extinguishment of debt 0 1,649
Gain on disposition of assets (1,665) (1,860)
Deferred income tax expense 1,800 10,432
Expenses not requiring cash 7,989 11,789
Equity in net earnings of subsidiaries 0 0
Change in accounts receivable (32,285) 9,161
Change in other assets 6,711 (7,138)
Change in accrued income taxes 2,179 923
Change in liabilities (9,543) (31,437)
Net cash provided by operating activities 45,924 95,531
Cash flows from investing activities:    
Capital expenditures (63,537) (109,531)
Proceeds from the sale of assets 2,901 2,340
Acquisition of ITS, net of cash acquired (117,991) 0
Payments of Dividends   0
Net cash (used in) investing activities (178,627) (107,191)
Cash flows from financing activities:    
Proceeds from debt issuance 125,000 130,000
Repayments of senior notes 0 (122,852)
Paydown on term note (5,000) (12,000)
Payment of debt issuance costs (5,386) (3,537)
Payments of debt extinguishment costs 0 (402)
Excess tax benefit from stock-based compensation (189) 49
Intercompany advances, net 0 0
Net cash provided by (used in) financing activities 114,425 (8,742)
Net change in cash and cash equivalents (18,278) (20,402)
Cash and cash equivalents, beginning of year 87,886 97,869
Cash and cash equivalents, end of period 69,608 77,467
Parent [Member]
   
Cash flows from operating activities:    
Net income (loss) 8,873 46,475
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 0 0
Loss on extinguishment of debt   1,649
Gain on disposition of assets 0 0
Deferred income tax expense (4,560) 7,025
Expenses not requiring cash 5,218 10,737
Equity in net earnings of subsidiaries (14,007) (50,957)
Change in accounts receivable (125,337) (208)
Change in other assets 45,072 (29,586)
Change in accrued income taxes (35,297) (766)
Change in liabilities 1,780 2,402
Net cash provided by operating activities (118,258) (13,229)
Cash flows from investing activities:    
Capital expenditures 0 0
Proceeds from the sale of assets 0 0
Acquisition of ITS, net of cash acquired 0  
Payments of Dividends   (8,387)
Net cash (used in) investing activities 0 (8,387)
Cash flows from financing activities:    
Proceeds from debt issuance 125,000 130,000
Repayments of senior notes   (122,852)
Paydown on term note (5,000) (12,000)
Payment of debt issuance costs (5,386) (3,537)
Payments of debt extinguishment costs   (402)
Excess tax benefit from stock-based compensation (189) 49
Intercompany advances, net (23,712) 2,919
Net cash provided by (used in) financing activities 90,713 (5,823)
Net change in cash and cash equivalents (27,545) (27,439)
Cash and cash equivalents, beginning of year 42,251 55,670
Cash and cash equivalents, end of period 14,706 28,231
Guarantor [Member]
   
Cash flows from operating activities:    
Net income (loss) 16,794 46,811
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 37,380 31,261
Loss on extinguishment of debt   0
Gain on disposition of assets (1,952) (615)
Deferred income tax expense 6,261 3,832
Expenses not requiring cash 1,563 716
Equity in net earnings of subsidiaries 0 0
Change in accounts receivable (22,895) (11,248)
Change in other assets (42,264) 22,490
Change in accrued income taxes 41,272 1,042
Change in liabilities (14,043) (25,239)
Net cash provided by operating activities 22,116 69,050
Cash flows from investing activities:    
Capital expenditures (38,430) (103,855)
Proceeds from the sale of assets 2,834 906
Acquisition of ITS, net of cash acquired (292)  
Payments of Dividends   (4,357)
Net cash (used in) investing activities (35,888) (107,306)
Cash flows from financing activities:    
Proceeds from debt issuance 0 0
Repayments of senior notes   0
Paydown on term note 0 0
Payment of debt issuance costs 0 0
Payments of debt extinguishment costs   0
Excess tax benefit from stock-based compensation 0 0
Intercompany advances, net 7,792 44,310
Net cash provided by (used in) financing activities 7,792 44,310
Net change in cash and cash equivalents (5,980) 6,054
Cash and cash equivalents, beginning of year 11,023 4,212
Cash and cash equivalents, end of period 5,043 10,266
Non-Guarantor [Member]
   
Cash flows from operating activities:    
Net income (loss) (2,714) 48,213
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 24,412 24,317
Loss on extinguishment of debt   0
Gain on disposition of assets 287 (1,245)
Deferred income tax expense 99 (425)
Expenses not requiring cash 1,208 336
Equity in net earnings of subsidiaries 0 0
Change in accounts receivable 115,947 20,617
Change in other assets 3,903 (42)
Change in accrued income taxes (3,796) 647
Change in liabilities 2,720 (8,600)
Net cash provided by operating activities 142,066 83,818
Cash flows from investing activities:    
Capital expenditures (25,107) (5,676)
Proceeds from the sale of assets 67 1,434
Acquisition of ITS, net of cash acquired (117,699)  
Payments of Dividends   (31,364)
Net cash (used in) investing activities (142,739) (35,606)
Cash flows from financing activities:    
Proceeds from debt issuance 0 0
Repayments of senior notes   0
Paydown on term note 0 0
Payment of debt issuance costs 0 0
Payments of debt extinguishment costs   0
Excess tax benefit from stock-based compensation 0 0
Intercompany advances, net 15,920 (47,229)
Net cash provided by (used in) financing activities 15,920 (47,229)
Net change in cash and cash equivalents 15,247 983
Cash and cash equivalents, beginning of year 34,612 37,987
Cash and cash equivalents, end of period 49,859 38,970
Eliminations [Member]
   
Cash flows from operating activities:    
Net income (loss) (14,007) (95,065)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 0 0
Loss on extinguishment of debt   0
Gain on disposition of assets 0 0
Deferred income tax expense 0 0
Expenses not requiring cash 0 0
Equity in net earnings of subsidiaries 14,007 50,957
Change in accounts receivable 0 0
Change in other assets 0 0
Change in accrued income taxes 0 0
Change in liabilities 0 0
Net cash provided by operating activities 0 (44,108)
Cash flows from investing activities:    
Capital expenditures 0 0
Proceeds from the sale of assets 0 0
Acquisition of ITS, net of cash acquired 0  
Payments of Dividends   44,108
Net cash (used in) investing activities 0 44,108
Cash flows from financing activities:    
Proceeds from debt issuance 0 0
Repayments of senior notes   0
Paydown on term note 0 0
Payment of debt issuance costs 0 0
Payments of debt extinguishment costs   0
Excess tax benefit from stock-based compensation 0 0
Intercompany advances, net 0 0
Net cash provided by (used in) financing activities 0 0
Net change in cash and cash equivalents 0 0
Cash and cash equivalents, beginning of year 0 0
Cash and cash equivalents, end of period $ 0 $ 0