Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (6,248)	$ 5,776
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Net unrealized loss (gain) related to derivative instruments	(4,548)	2,645
Depreciation and amortization	24,047	23,734
Loss on disposal or impairment, net	13,307	1,058
Earnings from equity method investments	(23,071)	(20,559)
Loss on issuance of common units by equity method investee	41	0
Loss (gain) on sale or impairment of equity method investment	39,764	(7,894)
Distributions from equity investments	25,712	25,879
Amortization of debt issuance costs	1,396	1,066
Deferred tax benefit	(22,642)	(682)
Non-cash equity compensation	2,874	2,777
Provision for uncollectible accounts receivable, net of recoveries	11	383
Currency loss (gain)	1,469	(519)
Inventory valuation adjustment	0	1,187
Changes in operating assets and liabilities (Note 13)	(4,572)	(16,307)
Net cash provided by operating activities	47,540	18,544
Cash flows from investing activities:
Capital expenditures	(73,520)	(84,327)
Proceeds from sale of long-lived assets	40	117
Contributions to equity method investments	(1,356)	(15,182)
Proceeds from sale of common units of equity method investee	0	29,012
Distributions in excess of equity in earnings of affiliates	6,074	5,201
Net cash used in investing activities	(68,762)	(65,179)
Cash flows from financing activities:
Debt issuance costs	0	(601)
Borrowings on credit facilities and issuance of senior unsecured notes, net of discount	174,000	422,000
Principal payments on credit facilities and other obligations	(110,011)	(162,012)
Rose Rock Midstream, L.P. equity issuance	0	89,119
Distributions to noncontrolling interests	(10,833)	(8,953)
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(807)	(3,630)
Dividends paid	(19,887)	(14,846)
Proceeds from issuance of common stock under employee stock purchase plan	269	313
Net cash provided by financing activities	32,731	321,390
Effect of exchange rate changes on cash and cash equivalents	2,884	172
Change in cash and cash equivalents	14,393	274,927
Cash and cash equivalents at beginning of period	58,096	40,598
Cash and cash equivalents at end of period	$ 72,489	$ 315,525