CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues	[1]	$ 711,639	$ 1,111,254	$ 873,255
Operating expenses:
Cost of goods sold (excluding depreciation, depletion and amortization)	[1]	635,825	950,006	767,911
Depreciation, depletion and amortization		28,441	24,803	20,828
Selling, general and administrative expenses		33,119	38,723	26,835
Project terminations		10,652	0	0
IPO transaction-related costs		0	0	10,966
Total operating expenses		708,037	1,013,532	826,540
Income from operations		3,602	97,722	46,715
Other expense (income):
Interest expense, net		12,554	7,365	10,396
Loss on extinguishment of debt		0	0	907
Other expense (income)		(45)	640	(144)
Total other expense		12,509	8,005	11,159
Income (loss) before provision for income taxes		(8,907)	89,717	35,556
Provision for income taxes		504	638	386
Net income (loss)		(9,411)	89,079	35,170
Less Predecessor net income before May 14, 2013		0	0	13,124
Post-IPO net income (loss)		$ (9,411)	$ 89,079	$ 22,046
Earning (loss) per common unit (basic) (in dollars per unit)	[2]	$ (0.39)	$ 3.70	$ 0.92
Earnings (loss) per common unit (diluted) (in dollars per unit)	[2]	$ (0.39)	$ 3.70	$ 0.92
Weighted average number of common units outstanding including participating securities (basic) (in units)	[2]	23,973,850	24,070,418	24,015,562
Weighted average number of common units outstanding (diluted) (in units)	[2]	23,973,850	24,076,437	24,021,957
Fuel revenues and cost of goods sold include excise taxes and similar taxes		$ 50,939	$ 50,116	$ 47,007

[1] Fuel revenues and cost of goods sold include excise taxes and similar taxes $50,939 $50,116 $47,007.

[2] See Note 15.