NONCONTROLLING INTERESTS (Tables)

12 Months Ended

Dec. 31, 2017

NONCONTROLLING INTERESTS.

Summary of the effects of changes in noncontrolling interests

	For the year ended December 31,
	2017		2016		2015
	(in thousands)
Net loss attributable to Select Energy Services, Inc. and its Predecessor	$	(16,816)	$	(307,524)	$	(80,891)
Transfers from noncontrolling interests:
Decrease in additional paid-in capital as a result of the contribution of proceeds from the Select 144A Offering to SES Holdings, LLC  in exchange for common units		—		(218,712)		—
Increase in contributed capital due to purchase of noncontrolling interest		—		707		—
Decrease in additional paid-in capital as a result of the contribution of net assets acquired to SES Holdings, LLC in exchange for common units		(4,879)		—		—
Decrease in additional paid-in capital as a result of the contribution of net assets from the Rockwater Merger to SES Holdings, LLC in exchange for common units		(170,276)		—		—
Decrease in additional paid-in capital as a result of the contribution of proceeds from the IPO to SES Holdings, LLC in exchange for common units		(41,135)		—		—
Increase in additional paid-in capital as a result of the repurchase of common units of SES Holdings, LLC		113		—		—
Change to equity from net loss attributable to Select Energy Services, Inc. and its Predecessor and transfers from noncontrolling interests	$	(232,993)	$	(525,529)	$	(80,891)