Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 34,209	$ 7,154
Adjustments to reconcile net income to net cash provided by operating activities:
Net unrealized loss (gain) related to derivative instruments	1,230	(245)
Depreciation and amortization	48,408	45,699
Loss on disposal or impairment of long-lived assets, net	2,430	19,257
Earnings from equity method investments	(44,462)	(34,149)
Gain on issuance of common units by equity method investee	(5,897)	(8,127)
Gain on sale of common units of equity method investee	(14,517)	0
Distributions from equity investments	48,031	36,601
Amortization of debt issuance costs	2,314	1,571
Deferred tax expense	12,791	8,035
Non-cash equity compensation	6,204	3,796
Excess tax benefit from equity-based awards	0	(1,650)
Loss on fair value of warrants	0	17,949
Provision for uncollectible accounts receivable, net of recoveries	(309)	93
Currency gain	(814)	(516)
Inventory valuation adjustment	1,235	0
Changes in operating assets and liabilities (Note 12)	(17,896)	(39,919)
Net cash provided by operating activities	72,957	55,549
Cash flows from investing activities:
Capital expenditures	(236,956)	(127,668)
Proceeds from sale of long-lived assets	230	4,020
Contributions to equity method investments	(23,461)	(67,977)
Payments to Acquire Businesses, Net of Cash Acquired	0	44,508
Proceeds from sale of common units of equity method investee	56,318	0
Distributions in excess of equity in earnings of affiliates	13,077	5,400
Net cash used in investing activities	(190,792)	(230,733)
Cash flows from financing activities:
Debt issuance costs	(6,289)	(155)
Borrowings on credit facilities and issuance of senior unsecured notes, net of discount	802,208	533,830
Principal payments on credit facilities and other obligations	(525,024)	(331,518)
Rose Rock Midstream, L.P. equity issuance	89,119	0
Distributions to noncontrolling interests	(19,261)	(13,209)
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(4,254)	(719)
Dividends paid	(31,478)	(19,628)
Proceeds from issuance of common stock under employee stock purchase plan	609	88
Excess tax benefit from equity-based awards	0	1,650
Net cash provided by financing activities	305,630	170,339
Effect of exchange rate changes on cash and cash equivalents	390	832
Change in cash and cash equivalents	188,185	(4,013)
Cash and cash equivalents at beginning of period	40,598	79,351
Cash and cash equivalents at end of period	$ 228,783	$ 75,338