CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED STATEMENTS OF OPERATIONS
Depreciation and amortization - Proppant management system rental	$ 5,792,000	$ 3,352,000	$ 2,000,000
Depreciation and amortization - Proppant management system services	461,000	160,000	119,000
Depreciation and amortization proppant inventory software services	42,000
Depreciation and amortization - Selling, general and administrative	340,000	250,000	276,000
Equity-based compensation expense excluding in Property, plant and equipment	1,080
Equity-based compensation expense	$ 3,701,000	$ 127,000	$ 64,000