CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Accumulated Deficit	Noncontrolling Interest
Beginning balance at Dec. 31, 2016	$ 684,928	$ 762	$ 3,021,040	$ (1,678)	$ (73,944)	$ (2,227,214)	$ (34,038)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased	(2,180)				(2,180)
Cash dividends	(8,458)					(8,458)
Stock-based compensation, net of forfeitures	2,089	5	2,147				(63)
Stock options exercised	939	1	938
Contribution from Exterran Corporation	19,709		19,709
Cash distribution to noncontrolling unitholders of the Partnership	(10,446)						(10,446)
Impact of adoption of Accounting Standard Update	1,290		209			1,081
Comprehensive income (loss)	(12,573)			549		(11,685)	(1,437)
Ending balance at Mar. 31, 2017	675,298	768	3,044,043	(1,129)	(76,124)	(2,246,276)	(45,984)
Beginning balance at Dec. 31, 2017	735,618	769	3,093,058	1,197	(76,732)	(2,241,243)	(41,431)
Increase (Decrease) in Stockholders' Equity
Treasury stock purchased	(1,041)				(1,041)
Cash dividends	(8,532)					(8,532)
Shares issued in employee stock purchase plan	223		223
Stock-based compensation, net of forfeitures	1,545	9	1,600				(64)
Cash distribution to noncontrolling unitholders of the Partnership	(11,766)						(11,766)
Impact of adoption of Accounting Standard Update	14,666			(125)		14,791
Comprehensive income (loss)	7,160			2,122		(3,816)	8,854
Ending balance at Mar. 31, 2018	$ 737,873	$ 778	$ 3,094,881	$ 3,194	$ (77,773)	$ (2,238,800)	$ (44,407)