CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue
Proppant system rental	$ 8,401	$ 2,504
Proppant system services	1,923	640
Total revenue	10,324	3,144
Operating costs and expenses
Cost of proppant system rental (excluding $1,029 and $760 of depreciation and amortization for the three months ended March 31, 2017 and 2016, respectively, shown separately)	350	337
Cost of proppant system services (excluding $63 and $34 of depreciation and amortization for the three months ended March 31, 2017 and 2016, respectively, shown separately)	2,074	765
Depreciation and amortization	1,164	869
Salaries, benefits and payroll taxes	1,008	747
Selling, general and administrative (excluding $72 and $75 of depreciation and amortization for the three months ended March 31, 2017 and 2016, respectively, shown separately)	877	552
Total operating cost and expenses	5,473	3,270
Operating income (loss)	4,851	(126)
Interest expense	(22)	(8)
Other income (expense)	(25)	12
Total other income (expense)	(47)	4
Income (loss) before income tax expense	4,804	(122)
Income tax expense	22	5
Net income (loss)	$ 4,782	$ (127)