CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue
Total revenue	$ 328,968	$ 396,970	$ 1,015,501	$ 1,166,612
Costs of revenue
Depreciation and amortization	28,263	31,853	88,624	93,180
Total costs of revenue	287,974	337,573	888,571	1,002,538
Gross profit	40,994	59,397	126,930	164,074
Operating expenses
Selling, general and administrative	27,280	25,110	86,953	77,662
Depreciation and amortization	952	984	2,858	2,332
Impairment of goodwill			4,396
Impairment of property and equipment	49		942	2,282
Impairment of cost-method investment				2,000
Lease abandonment costs	238	1,045	1,494	4,142
Total operating expenses	28,519	27,139	96,643	88,418
Income from operations	12,475	32,258	30,287	75,656
Other income (expense)
(Losses) gains on sales of property and equipment, net	(2,033)	1,458	(8,233)	2,959
Interest expense, net	(438)	(1,322)	(2,370)	(3,815)
Foreign currency (loss) gain, net	(59)	248	268	(492)
Other (expense) income, net	(272)	40	(62)	140
Income before income tax expense	9,673	32,682	19,890	74,448
Income tax expense	(2,501)	(1,415)	(3,250)	(2,027)
Net income	7,172	31,267	16,640	72,421
Less: net income attributable to noncontrolling interests	(1,793)	(8,316)	(3,926)	(22,409)
Net income attributable to Select Energy Services, Inc.	5,379	22,951	12,714	50,012
Water services
Revenue
Total revenue	196,782	233,503	619,388	685,687
Costs of revenue
Costs of revenue	153,741	177,643	472,013	518,844
Water infrastructure
Revenue
Total revenue	63,953	65,878	169,279	175,662
Costs of revenue
Costs of revenue	46,748	42,324	126,634	120,304
Oilfield chemicals
Revenue
Total revenue	67,932	63,985	197,762	192,422
Costs of revenue
Costs of revenue	57,357	56,473	170,935	172,057
Other
Revenue
Total revenue	301	33,604	29,072	112,841
Costs of revenue
Costs of revenue	1,865	29,280	30,365	98,153
Class A Common Stock
Other income (expense)
Net income attributable to Select Energy Services, Inc.	$ 5,379	$ 22,951	$ 12,714	$ 48,523
Net income per share attributable to common stockholders (Note 16):
Basic	$ 0.07	$ 0.29	$ 0.16	$ 0.69
Diluted	$ 0.07	$ 0.29	$ 0.16	$ 0.69
Class A-2 Common Stock
Other income (expense)
Net income attributable to Select Energy Services, Inc.				$ 1,489
Net income per share attributable to common stockholders (Note 16):
Basic				$ 0.69
Diluted				$ 0.69