Segment Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Revenues	$ 583,759	$ 802,137	$ 1,127,370	$ 1,545,383
Cost of revenues	505,031	779,301	982,537	1,492,350
Operating expense, excluding depreciation, depletion and amortization expense	32,471	34,074	64,751	67,168
Lease operating expense	1,508	1,700	3,039	2,759
Depreciation, depletion and amortization	5,005	3,290	8,256	6,351
General and administrative expense	11,814	5,733	21,939	10,667
Acquisition and integration expense	470	2,419	1,531	5,270
Income (loss) from operations	27,460	(24,380)	45,317	(39,182)
Loss on termination of financing agreements	(19,229)	0	(19,229)	0
Interest expense and financing costs, net	(5,825)	(3,397)	(11,382)	(6,904)
Other income (expense), net	(158)	(95)	(154)	(140)
Change in value of contingent consideration	3,313	140	(1,709)	1,717
Change in value of contingent consideration	(9,495)	2,297	(14,424)	4,762
Equity earnings (losses) from Piceance Energy, LLC	(2,950)	760	(4,776)	539
Loss before income taxes	(6,884)	(24,675)	(6,357)	(39,208)
Income tax benefit (expense)	18,607	(2)	18,542	(37)
Net income (loss)	11,723	(24,677)	12,185	(39,245)
Capital expenditures	5,126	3,891	$ 9,873	5,909
Reporting segments | segment			3
Refining Distribution and Marketing [Member]
Revenues	475,987	711,696	$ 949,559	1,381,739
Cost of revenues	417,315	701,246	838,585	1,352,162
Operating expense, excluding depreciation, depletion and amortization expense	22,714	27,958	49,069	55,129
Lease operating expense	0	0	0	0
Depreciation, depletion and amortization	2,891	1,917	5,158	3,621
General and administrative expense	4,501	433	8,710	1,533
Acquisition and integration expense	0	1,528	0	4,028
Income (loss) from operations	28,566	(21,386)	48,037	(34,734)
Capital expenditures	4,570	2,922	8,586	4,761
Retail Segment [Member]
Revenues	80,938	59,419	127,657	111,250
Cost of revenues	64,298	51,438	97,728	95,406
Operating expense, excluding depreciation, depletion and amortization expense	9,757	6,116	15,682	12,039
Lease operating expense	0	0	0	0
Depreciation, depletion and amortization	1,590	557	2,183	1,111
General and administrative expense	959	128	1,785	651
Acquisition and integration expense	0	0	0	0
Income (loss) from operations	4,334	1,180	10,279	2,043
Capital expenditures	104	100	502	100
Natural Gas and Oil Operations [Member]
Revenues	1,709	1,839	2,185	3,416
Cost of revenues	0	0	0	0
Operating expense, excluding depreciation, depletion and amortization expense	0	0	0	0
Lease operating expense	1,508	1,700	3,039	2,759
Depreciation, depletion and amortization	9	255	23	525
General and administrative expense	400	94	400	244
Acquisition and integration expense	0	0	0	0
Income (loss) from operations	(208)	(210)	(1,277)	(112)
Capital expenditures	0	676	0	748
Commodity Marketing And Logistics [Member]
Revenues	25,125	29,183	47,969	48,978
Cost of revenues	23,418	26,617	46,224	44,782
Operating expense, excluding depreciation, depletion and amortization expense	0	0	0	0
Lease operating expense	0	0	0	0
Depreciation, depletion and amortization	229	508	458	1,014
General and administrative expense	2,131	823	3,363	1,913
Acquisition and integration expense	0	0	0	0
Income (loss) from operations	(653)	1,235	(2,076)	1,269
Capital expenditures	0	193	0	300
Corporate and Other [Member]
Revenues	0	0	0	0
Cost of revenues	0	0	0	0
Operating expense, excluding depreciation, depletion and amortization expense	0	0	0	0
Lease operating expense	0	0	0	0
Depreciation, depletion and amortization	286	53	434	80
General and administrative expense	3,823	4,255	7,681	6,326
Acquisition and integration expense	470	891	1,531	1,242
Income (loss) from operations	(4,579)	(5,199)	(9,646)	(7,648)
Capital expenditures	452	0	785	0
Intersegment Eliminations [Member]
Revenues	(62,466)	(38,822)	(101,622)	(71,087)
Intersegment Eliminations [Member] | Refining Distribution and Marketing [Member]
Revenues	(62,466)	(38,822)	(83,512)	(71,087)
Intersegment Eliminations [Member] | Retail Segment [Member]
Revenues	0	0	0	0
Intersegment Eliminations [Member] | Natural Gas and Oil Operations [Member]
Revenues	0	0	0	0
Intersegment Eliminations [Member] | Commodity Marketing And Logistics [Member]
Revenues	0	0	(18,110)	0
Intersegment Eliminations [Member] | Corporate and Other [Member]
Revenues	0	0	0	0
Operating Segments [Member]
Revenues	646,225	840,959	1,228,992	1,616,470
Operating Segments [Member] | Refining Distribution and Marketing [Member]
Revenues	538,453	750,518	1,033,071	1,452,826
Operating Segments [Member] | Retail Segment [Member]
Revenues	80,938	59,419	127,657	111,250
Operating Segments [Member] | Natural Gas and Oil Operations [Member]
Revenues	1,709	1,839	2,185	3,416
Operating Segments [Member] | Commodity Marketing And Logistics [Member]
Revenues	25,125	29,183	66,079	48,978
Operating Segments [Member] | Corporate and Other [Member]
Revenues	$ 0	$ 0	$ 0	$ 0