Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014
Revenues	$ 543,611	$ 743,246
Cost of revenues	477,506	713,084
Operating expense, excluding depreciation, depletion and amortization expense	32,280	33,094
Lease operating expense	1,531	1,024
Depreciation, depletion and amortization	3,251	3,061
General and administrative expense	10,125	4,934
Acquisition and integration expense	1,061	2,851
Operating income (loss)	17,857	(14,802)
Interest expense and financing costs, net	(5,557)	(3,507)
Other income (expense), net	4	(45)
Change in value of common stock warrants	(5,022)	1,577
Change in value of contingent consideration	(4,929)	2,465
Equity losses from Piceance Energy, LLC	(1,826)	(221)
Income (loss) before income taxes	527	(14,533)
Income tax expense	(65)	(35)
Net income (loss)	462	(14,568)	[1]
Capital expenditures	4,747	2,018
Reporting segments	3
Refining Distribution and Marketing [Member]
Revenues	473,572	670,043
Cost of revenues	421,270	650,916
Operating expense, excluding depreciation, depletion and amortization expense	26,355	27,171
Lease operating expense	0	0
Depreciation, depletion and amortization	2,267	1,704
General and administrative expense	4,209	1,100
Acquisition and integration expense	0	2,500
Operating income (loss)	19,471	(13,348)
Capital expenditures	4,016	1,839
Retail Segment [Member]
Revenues	46,719	51,831
Cost of revenues	33,430	43,968
Operating expense, excluding depreciation, depletion and amortization expense	5,925	5,923
Lease operating expense	0	0
Depreciation, depletion and amortization	593	554
General and administrative expense	826	523
Acquisition and integration expense	0	0
Operating income (loss)	5,945	863
Capital expenditures	398	0
Natural Gas and Oil Operations [Member]
Revenues	476	1,577
Cost of revenues	0	35
Operating expense, excluding depreciation, depletion and amortization expense	0	0
Lease operating expense	1,531	1,024
Depreciation, depletion and amortization	14	270
General and administrative expense	0	150
Acquisition and integration expense	0	0
Operating income (loss)	(1,069)	98
Capital expenditures	0	72
Commodity Marketing And Logistics [Member]
Revenues	22,844	19,795
Cost of revenues	22,806	18,165
Operating expense, excluding depreciation, depletion and amortization expense	0	0
Lease operating expense	0	0
Depreciation, depletion and amortization	229	506
General and administrative expense	1,232	1,090
Acquisition and integration expense	0	0
Operating income (loss)	(1,423)	34
Capital expenditures	0	107
Corporate and Other [Member]
Revenues	0	0
Cost of revenues	0	0
Operating expense, excluding depreciation, depletion and amortization expense	0	0
Lease operating expense	0	0
Depreciation, depletion and amortization	148	27
General and administrative expense	3,858	2,071
Acquisition and integration expense	1,061	351
Operating income (loss)	(5,067)	(2,449)
Capital expenditures	$ 333	$ 0

[1] Entities with a net loss are prohibited from including potential common shares in the computation of diluted per share amounts. We have utilized the basic shares outstanding to calculate both basic and diluted loss per share for the three months ended March 31, 2014.