CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL - USD ($) $ in Thousands	Partners' Capital Common Units	Partners' Capital General Partner Units	Treasury Units	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2013	$ 578,493	$ 16,780	$ (1,165)	$ (2,353)	$ 591,755
Balance (in units) at Dec. 31, 2013	49,465,528	1,003,227
Balance (in units) at Dec. 31, 2013			(50,917)
Increase (Decrease) in Partners' Capital
Issuance of common units for vesting of phantom units (in units)	45,369
Treasury units purchased			$ (285)		(285)
Treasury units purchased (in units)			(9,437)
Net proceeds from issuance of common units	$ 169,471				169,471
Net proceeds from issuance of common units (in units)	6,210,000
Proceeds from sale of general partner units to Exterran Holdings		$ 3,573			3,573
Proceeds from sale of general partner units to Exterran Holdings (in units)		125,994
Contribution (distribution) of capital, net	$ 1,149	$ (197)			952
Excess of purchase price of equipment over Exterran Holdings' cost of equipment	(8,643)	(473)			(9,116)
Cash distributions	(56,284)	(5,648)			(61,932)
Unit-based compensation expense	971				971
Interest rate swap loss, net of reclassification to earnings				(2,979)	(2,979)
Amortization of terminated interest rate swaps				1,865	1,865
Net income	18,997	5,694			24,691
Balance at Jun. 30, 2014	$ 704,154	$ 19,729	$ (1,450)	(3,467)	718,966
Balance (in units) at Jun. 30, 2014	55,720,897	1,129,221
Balance (in units) at Jun. 30, 2014			(60,354)
Balance at Dec. 31, 2014	$ 668,714	$ 19,542	$ (1,477)	(3,438)	$ 683,341
Balance (in units) at Dec. 31, 2014	55,724,022	1,129,221
Balance (in units) at Dec. 31, 2014			(61,665)		(61,665)
Increase (Decrease) in Partners' Capital
Issuance of common units for vesting of phantom units (in units)	52,224
Treasury units purchased			$ (274)		$ (274)
Treasury units purchased (in units)			(11,009)
Acquisition of a portion of Exterran Holdings' U.S. contract operations business	$ 107,710	$ 2,198			109,908
Acquisition of a portion of Exterran Holdings' U.S. contract operations business (in units)	3,963,138	80,341
Net proceeds from issuance of common units	$ 1,268				1,268
Net proceeds from issuance of common units (in units)	49,774
Contribution (distribution) of capital, net	$ (649)	$ (373)			(1,022)
Excess of purchase price of equipment over Exterran Holdings' cost of equipment	(8,324)	(457)			(8,781)
Cash distributions	(62,464)	(8,762)			(71,226)
Unit-based compensation expense	839				839
Interest rate swap loss, net of reclassification to earnings				(4,191)	(4,191)
Amortization of terminated interest rate swaps				1,609	1,609
Net income	33,389	9,023			42,412
Balance at Jun. 30, 2015	$ 740,483	$ 21,171	$ (1,751)	$ (6,020)	$ 753,883
Balance (in units) at Jun. 30, 2015	59,789,158	1,209,562
Balance (in units) at Jun. 30, 2015			(72,674)		(72,674)