Equity (Tables)

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Schedule of Stockholders Equity [Table Text Block]

Changes to equity during the three months ended March 31, 2017, were as follows:

	General			TexNew Mex -			Common -			Common -			Subordinated -
	Partner			Western			Public			Western			Western			Total
	(In thousands)
Balance at December 31, 2016	$	(5,532	)	$	(310	)	$	600,100		$	(132,802	)	$	(363,132	)	$	98,324
Unit-based compensation	—			—			(98		)	—			—			(98		)
Conversion of subordinated units	—			—			—			(367,766		)	367,766			—
Distributions to partners declared	(2,147		)	—			(12,629		)	(4,028		)	(9,979		)	(28,783		)
Net income attributable to limited partners	—			—			9,430			5,111			5,345			19,886
Balance at March 31, 2017	$	(7,679	)	$	(310	)	$	596,803		$	(499,485	)	$	—		$	89,329

Schedule of Incentive Distributions Made to Managing Members or General Partners by Distribution [Table Text Block]

no arrearages on common units.

	Total Quarterly Distribution per Unit Target Amount	Marginal Percentage Interest in Distributions
		Unitholders		General Partner
Minimum Quarterly Distribution	$0.2875	100.0	%	—
First Target Distribution	above $0.2875 up to $0.3306	100.0	%	—
Second Target Distribution	above $0.3306 up to $0.3594	85.0	%	15.0	%
Third Target Distribution	above $0.3594 up to $0.4313	75.0	%	25.0	%
Thereafter	above $0.4313	50.0	%	50.0	%

Distributions Made to Limited Partner, by Distribution [Table Text Block]

2017 quarterly distribution declarations, payments and scheduled payments:

Declaration Date	Record Date	Payment Date	Distribution per Common and Subordinated Unit
January 31, 2017	February 13, 2017	March 1, 2017	$	0.4375
April 28, 2017	May 9, 2017	May 23, 2017	0.4525
Total			$	0.8900

During the three months ended March 31, 2017 and 2016, we declared and paid distributions that were in excess of the target distribution amounts set forth in our partnership agreement, resulting in distributions to our General Partner as the holder of incentive distribution rights. The total quarterly cash distributions for the three months ended March 31, 2017 and 2016, respectively, were as follows:

	Three Months Ended
	March 31,
	2017		2016
	(In thousands, except per unit data)
TexNew Mex Unit distributions:
TexNew Mex Unit distributions	$	—	$	310
Total TexNew Mex Unit distributions	$	—	$	310
General Partner's distributions:
General Partner's incentive distribution rights	$	2,147	$	761
Total General Partner's distributions	$	2,147	$	761
Limited partners' distributions:
Common	$	16,657	$	9,595
Subordinated	9,979		8,954
Total limited partners' distributions	26,636		18,549
Total cash distributions	$	28,783	$	19,620
Cash distributions per limited partner unit	$	0.4375	$	0.3925