CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities:
Net income	$ 90,180	$ 57,839
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	74,459	72,416
Amortization of intangibles	10,819	12,325
Stock-based compensation expense	8,348	10,748
Equity earnings, net of dividends related to earnings	(2,125)	(1,806)
Loss on extinguishment of debt	0	30,488
Gain on divestiture	0	(18,385)
Gain on sale of investment	0	1,882
Gain on remeasurement of previously held equity interest	(14,199)	0
Deferred income taxes	5,765	10,220
Other	127	294
Changes in operating assets and liabilities	(63,401)	(83,539)
Net cash provided by operating activities	109,973	88,718
Investing activities:
Capital expenditures	(129,661)	(154,299)
Acquisition of business, net of cash acquired	(34,396)	(5,046)
Investment in Joint Venture	(4,300)	0
Return on equity investments	0	951
Proceeds from divestiture	0	44,937
Proceeds from sale of investment	0	3,216
Proceeds from sale of fixed assets and other	4,846	3,374
Net cash used in investing activities	(163,511)	(106,867)
Financing activities:
Proceeds from issuance of long-term debt, net of debt issuance costs	0	737,462
Repurchase of Senior Notes and Senior PIK Toggle Notes	0	(675,615)
Increase (decrease) in short-term debt, net	973	(3,717)
Borrowings on long-term debt	0	6,609
Principal payments on long-term debt	(6,239)	(2,202)
Purchase of noncontrolling interests	(1,262)	0
Proceeds from exercise of warrants	8,540	8,492
Taxes withheld and paid on employees' share based payment awards	(1,330)	(4,175)
Other	(173)	(103)
Net cash provided by (used in) financing activities	509	66,751
Effects of exchange rate changes on cash and cash equivalents	17,743	11,883
Changes in cash and cash equivalents	(35,286)	60,485
Cash and cash equivalents at beginning of period	267,270	184,370
Cash and cash equivalents at end of period	$ 231,984	$ 244,855