REVENUE

Revenue is measured based upon consideration specified in a contract with a customer. The Company recognizes revenue over time, as contractual performance obligations are satisfied by transferring the benefit of the service to our customer. The benefit is transferred to the customer as the service is provided and revenue is recognized accordingly via time-based metrics. A corresponding contract asset of $1.9 million was recorded in the September 30, 2018 balance sheet in the Accounts receivable line item. The Company is entitled to receive payment as it satisfies performance obligations with customers. The amount of remaining performance obligations relating to loads in process at 11:59 pm as of September 30, 2018, was deemed to be immaterial. Our business consists of two reportable segments, Trucking and USAT Logistics. For more detailed information about our reportable segments, see Note 4.

The Company’s revenue types are line haul, fuel surcharge and accessorial. Line haul revenue represents the majority of our revenue and consists of fees earned for freight transportation, excluding fuel surcharge. Fuel surcharge revenue consists of additional fees earned by the Company in connection with the performance of line haul services to partially or completely offset the cost of fuel. Accessorial revenue consists of ancillary services `provided by the Company, including but not limited to, stop-off charges, loading and unloading charges, tractor or trailer detention charges, expedited charges, repositioning charges, etc. These accessorial charges are recognized as revenue throughout the service provided. The following tables set forth revenue disaggregated by revenue type and segment (in thousands):



	Three Months Ended September 30,
Revenue type	2018						2017
	Trucking		USAT Logistics		Total		Trucking		USAT Logistics		Total
Freight	$	71,774	$	41,746	$	113,520	$	65,869	$	34,012	$	99,881
Fuel surcharge	11,880		4,102		15,982		9,540		2,309		11,849
Accessorial	1,875		1,206		3,081		1,041		1,464		2,505
Total	$	85,529	$	47,054	$	132,583	$	76,450	$	37,785	$	114,235



	Nine Months Ended September 30,
Revenue type	2018						2017
	Trucking		USAT Logistics		Total		Trucking		USAT Logistics		Total
Freight	$	211,503	$	126,848	$	338,351	$	187,384	$	94,856	$	282,240
Fuel surcharge	35,178		11,812		46,990		27,555		7,456		35,011
Accessorial	3,150		4,486		7,636		3,336		2,676		6,012
Total	$	249,831	$	143,146	$	392,977	$	218,275	$	104,988	$	323,263