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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cash flows from operating activities      
Net income (loss) $ (156,079) $ 106,110 $ 229,312
Adjustments to reconcile net income (loss) to cash provided by operating activities      
Depreciation and amortization 114,215 108,962 90,041
Equity-based compensation expense 15,978 28,600 38,368
Amortization of deferred financing costs 164 164 235
Venezuelan currency devaluation charge 0 0 13,010
Deferred tax provision (benefit) (27,536) 4,868 27,995
Provision for (recovery of) bad debts 11,581 228 (3,137)
(Gain) loss on sale of assets 1,117 (1,038) 289
Loss on asset retirement 29,881 0 0
Changes in fair value of investments (1,123) 741 (1,403)
Change in value of contingent consideration 0 (1,532) 0
Unrealized (gain) loss on derivative 64 (210) 0
Other 0 (3,909) 0
Changes in operating assets and liabilities, net of effects from acquisitions      
Accounts receivable 70,388 140,657 (43,349)
Inventories 27,379 41,502 (30,282)
Other current assets 4,039 16,981 (7,926)
Other assets (692) 1,333 (1,619)
Accounts payable (3,485) (3,035) 4,991
Deferred revenue (39,659) (18,473) 13,505
Accrued expenses and other current liabilities (43,583) 3,971 32,915
Other noncurrent liabilities (13,480) 1,838 5,915
Net cash provided by (used in) operating activities (10,831) 427,758 368,860
Cash flows from investing activities      
Acquisition of Blackhawk (net of acquired cash) (150,437) 0 0
Acquisition of Timco Services, Inc. (net of acquired cash) 0 (78,676) 0
Purchase of property, plant and equipment (42,127) (99,723) (172,952)
Proceeds from sale of assets and equipment 3,858 4,579 848
Proceeds from sale of investments 11,101 0 0
Purchase of marketable securities (1,003) (869) (1,539)
Other (307) 0 0
Net cash used in investing activities (178,915) (174,689) (173,643)
Cash flows from financing activities      
Repayments of borrowings (7,201) (765) (72)
Proceeds from borrowings 363 151 0
Cost of Series A convertible preferred stock conversion to common stock (595) 0 0
Dividends paid on common stock (79,013) (92,844) (69,311)
Dividends paid on preferred stock (1) (2) (1)
Distribution to noncontrolling interest (8,027) (43,539) (41,565)
Treasury shares withheld (3,264) (4,497) (4,801)
Proceeds from the issuance of ESPP shares 973 287 0
Net cash used in financing activities (96,765) (141,209) (115,750)
Effect of exchange rate changes on cash due to Venezuelan devaluation 0 0 (1,040)
Effect of exchange rate changes on cash 3,678 1,145 5,980
Net increase (decrease) in cash (282,833) 113,005 84,407
Cash and cash equivalents at beginning of period 602,359 489,354 404,947
Cash and cash equivalents at end of period $ 319,526 $ 602,359 $ 489,354