Revenue Revenue (Notes)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.



	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
	Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue
Sand sales revenue	$	26,862	39	%	$	34,626	64	%	$	48,008	40	%	$	56,913	58	%
Reservation revenue	4,500		7	%	5,838		11	%	9,000		8	%	12,466		13	%
Shortfall revenue	16,283		24	%	668		1	%	22,039		18	%	668		1	%
Logistics revenue	20,296		30	%	13,316		24	%	40,669		34	%	27,029		28	%
Total revenues	$	67,941	100	%	$	54,448	100	%	$	119,716	100	%	$	97,076	100	%

The Company recorded $4,095 of deferred revenue on the balance sheet on December 31, 2018, of which $1,017 has been recognized in the six months ended June 30, 2019 and the Company expects to recognize an additional $578 in 2019 and the remainder in 2020.

Segment Information

Reportable operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision maker, or decision-making group, in making decisions on how to allocate resources and assess performance. The Company’s chief operating decision maker is the Chief Executive Officer. The Company and the Chief Executive Officer view the Company’s operations and manage its business, including the recently acquired logistics assets and wellsite proppant storage solutions business, as one reportable operating segment.