Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (10,277,000)	$ (4,893,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	24,599,000	24,051,000
Loss on disposal or impairment, net	2,410,000	13,307,000
Earnings from equity method investments	(17,091,000)	(23,071,000)
Loss on issuance of common units by equity method investee	0	41,000
Loss on sale or impairment of equity method investment	0	39,764,000
Distributions from equity investments	17,301,000	25,712,000
Amortization of debt issuance costs and discount	1,364,000	1,396,000
Loss on early extinguishment of debt	19,922,000	0
Deferred tax benefit	(634,000)	(22,642,000)
Non-cash equity compensation	2,757,000	2,874,000
Provision for uncollectible accounts receivable, net of recoveries	151,000	11,000
Currency loss	0	1,469,000
Inventory valuation adjustment	455,000	0
Changes in operating assets and liabilities (Note 11)	(12,948,000)	(9,120,000)
Net cash provided by operating activities	28,009,000	48,899,000
Cash flows from investing activities:
Capital expenditures	(92,248,000)	(74,879,000)
Proceeds from sale of long-lived assets	15,500,000	40,000
Contributions to equity method investments	(2,490,000)	(1,356,000)
Distributions in excess of equity in earnings of affiliates	4,392,000	6,074,000
Net cash used in investing activities	(74,846,000)	(70,121,000)
Cash flows from financing activities:
Debt issuance costs	(4,632,000)	0
Borrowings on credit facilities and issuance of senior notes, net of discount	437,018,000	174,000,000
Principal payments on credit facilities and other obligations	(348,278,000)	(110,011,000)
Debt extinguishment costs	(16,293,000)	0
Distributions to noncontrolling interests	0	(10,833,000)
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(1,047,000)	(807,000)
Dividends paid	(29,770,000)	(19,887,000)
Proceeds from issuance of common stock under employee stock purchase plan	231,000	269,000
Net cash provided by financing activities	37,229,000	32,731,000
Effect of exchange rate changes on cash and cash equivalents	1,248,000	2,884,000
Change in cash and cash equivalents	(8,360,000)	14,393,000
Cash and cash equivalents at beginning of period	74,216,000	58,096,000
Cash and cash equivalents at end of period	$ 65,856,000	$ 72,489,000