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Revenue Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 23,409	$ 65,690	$ 97,002	$ 185,406
Sand sales revenue
Disaggregation of Revenue [Line Items]
Revenue	12,445	29,653	50,808	86,661
Shortfall revenue
Disaggregation of Revenue [Line Items]
Revenue	6,842	15,620	22,148	37,659
Logistics revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 4,122	$ 20,417	$ 24,046	$ 61,086
Product Concentration Risk | Percentage of Total Revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	100.00%	100.00%	100.00%	100.00%
Product Concentration Risk | Percentage of Total Revenue | Sand sales revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	53.00%	45.00%	52.00%	47.00%
Product Concentration Risk | Percentage of Total Revenue | Shortfall revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	29.00%	24.00%	23.00%	20.00%
Product Concentration Risk | Percentage of Total Revenue | Logistics revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	18.00%	31.00%	25.00%	33.00%

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