Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]
Income taxes paid	$ 415	$ 456	$ 1
Interest paid, excluding amounts capitalized	25,303	13,411	1,837
Accrued capital expenditures	3,326	2,421	8,653
Contribution of net assets from affiliate	104,796	133,259	60,870
Accrued TexNew Mex unit distributions	0	310	0
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction	67	0	0
Other	$ 0	$ 0	$ (2,502)