Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 54,298	$ 84,004
Accounts receivable, affiliate	52,056	11,431
Accounts receivable, third-party	54,785	496
Inventories	14,483	16,282
Prepaid expenses	8,276	6,810
Other current assets	2,550	1,048
Total current assets	186,448	120,071
Property, plant and equipment, net	182,545	178,765
Intangible assets, net	4,185	4,741
Other assets, net	5,095	3,466
Total assets	378,273	307,043
Current liabilities:
Accounts payable, affiliate	105,715	7,680
Accounts payable, trade	11,455	1,353
Accrued liabilities	19,197	4,018
Total current liabilities	136,367	13,051
Liabilities, Noncurrent [Abstract]
Long-term debt, less current portion	269,000	0
Other liabilities	0	5
Total long-term liabilities	269,000	5
Commitments and contingencies
Equity (Deficit):
Division equity	0	60,635
Common unitholders - Public (15,823,408 and 15,812,500 units issued and outstanding, respectively)	327,592	326,151
Common unitholders - Western (8,158,592 and 6,998,500 units issued and outstanding, respectively)	(94,583)	(33,174)
Subordinated unitholders - Western (22,811,000 units issued and outstanding)	(260,103)	(59,625)
Total equity	(27,094)	293,987
Total liabilities and equity	$ 378,273	$ 307,043