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 (loss)	$ 12,185	$ (39,245)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation, depletion, and amortization	8,256	6,351
Loss on termination of financing agreements	19,229	0
Non-cash interest expense	9,488	4,877
Change in value of common stock warrants	1,709	(1,717)
Change in value of contingent consideration	14,424	(4,762)
Deferred taxes	(18,542)	(79)
Stock-based compensation	2,976	1,610
Unrealized loss on derivative contracts	426	191
Equity (earnings) losses from Piceance Energy, LLC	4,776	(539)
Net changes in operating assets and liabilities:
Trade accounts receivable	52,989	19,914
Prepaid and other assets	(4,704)	(50,575)
Inventories	(22,257)	(28,748)
Obligations under inventory financing agreements	45,711	5,478
Accounts payable and other accrued liabilities	(28,055)	14,064
Net cash provided by (used in) operating activities	98,611	(73,180)
Cash flows from investing activities
Acquisition of Koko'oha Investments, LLC, net of cash acquired	(63,269)	(10,000)
Capital expenditures	(9,873)	(5,909)
Payment for working capital settlement on HIE acquisition	0	(582)
Investment in Piceance Energy, LLC	(27,529)	0
Net cash used in investing activities	(100,671)	(16,491)
Cash flows from financing activities
Proceeds from sale of common stock	300	0
Proceeds from borrowings	90,900	197,537
Repayments of borrowings	(107,558)	(173,905)
Net repayments on deferred payment arrangement	(770)	0
Payment of deferred loan costs	(5,872)	(1,136)
Purchase of common stock for retirement	0	(287)
Proceeds from inventory financing agreements	287,658	47,200
Payments for termination of supply and exchange agreements	(273,605)	0
Restricted cash released	0	52
Net cash provided by (used in) financing activities	(8,947)	69,461
Net decrease in cash and cash equivalents	(11,007)	(20,210)
Cash at beginning of period	89,210	38,061
Cash at end of period	78,203	17,851
Supplemental cash flow information
Cash received (paid) for interest	(1,224)	(2,027)
Cash received (paid) for taxes	262	235
Non-cash investing and financing activities
Accrued capital expenditures	$ 1,687	$ 1,379