(13) Segment Information

Landstar markets its integrated transportation management solutions primarily through independent commission sales agents and exclusively utilizes third party capacity providers to transport customers’ freight. Landstar’s independent commission sales agents enter into contractual arrangements with the Company and are responsible for locating freight, making that freight available to Landstar’s capacity providers and coordinating the transportation of the freight with customers and capacity providers. The Company’s third party capacity providers consist of independent contractors who provide truck capacity to the Company under exclusive lease arrangements (the “BCO Independent Contractors”), unrelated trucking companies who provide truck capacity to the Company under non-exclusive contractual arrangements (the “Truck Brokerage Carriers”), air cargo carriers, ocean cargo carriers and railroads. Through this network of agents and capacity providers linked together by Landstar’s information technology systems, Landstar operates an integrated transportation management solutions business primarily throughout North America with revenue of $3.6 billion during the most recently completed fiscal year. The Company reports the results of two operating segments: the transportation logistics segment and the insurance segment.

The transportation logistics segment provides a wide range of integrated transportation management solutions. Transportation services offered by the Company include truckload and less-than-truckload transportation, rail intermodal, air cargo, ocean cargo, expedited ground and air delivery of time-critical freight, heavy-haul/specialized, U.S.-Canada and U.S.-Mexico cross-border, intra-Mexico, project cargo and customs brokerage. Examples of the industries serviced by the transportation logistics segment include automotive products, building products, metals, chemicals, foodstuffs, heavy machinery, retail, electronics and military equipment. In addition, the transportation logistics segment provides transportation services to other transportation companies, including third party logistics and less-than-truckload service providers. Each of the independent commission sales agents has the opportunity to market all of the services provided by the transportation logistics segment. Billings for freight transportation services are typically charged to customers on a per shipment basis for the physical transportation of freight.

During 2017, the Company incorporated Landstar Metro, S.A.P.I. de C.V., a transportation logistics company (“Landstar Metro”), and Landstar Metro Servicios S.A.P.I. de C.V., a services company (“Landstar Servicios”), each based in Mexico City, Mexico. On September 20, 2017, Landstar Metro acquired substantially all of the assets of the asset-light transportation logistics business of a Mexican transportation logistics company. In connection with the acquisition, individuals affiliated with the seller subscribed in the aggregate for a 30% equity interest in each of Landstar Metro and Landstar Servicios. Landstar Metro provides freight and logistics services within the country of Mexico and in conjunction with Landstar’s U.S./Mexico cross-border services. Landstar Servicios provides various administrative, financial, operational, safety and compliance services to Landstar Metro. The results of operations from Landstar Metro and Landstar Servicios are presented as part of the Company’s transportation logistics segment.

The insurance segment is comprised of Signature Insurance Company (“Signature”), a wholly owned offshore insurance subsidiary, and Risk Management Claim Services, Inc. The insurance segment provides risk and claims management services to certain of Landstar’s operating subsidiaries. In addition, it reinsures certain risks of the Company’s BCO Independent Contractors and provides certain property and casualty insurance directly to certain of Landstar’s operating subsidiaries. Revenue at the insurance segment represents reinsurance premiums from third party insurance companies that provide insurance programs to BCO Independent Contractors where all or a portion of the risk is ultimately borne by Signature. Internal revenue for premiums billed by the insurance segment to the transportation logistics segment is calculated each fiscal period based primarily on an actuarial calculation of historical loss experience and is believed to approximate the cost that would have been incurred by the transportation logistics segment had similar insurance been obtained from an unrelated third party.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The Company evaluates a segment’s performance based on operating income.

No single customer accounted for more than 10% of the Company’s consolidated revenue in fiscal years 2017, 2016 and 2015. Substantially all of the Company’s revenue is generated in North America, primarily through customers located in the United States.

The following tables summarize information about the Company’s reportable business segments as of and for the fiscal years ending December 30, 2017, December 31, 2016 and December 26, 2015 (in thousands):


	Transportation
	Logistics		Insurance		Total
2017
External revenue	$	3,599,382	$	46,982	$	3,646,364
Internal revenue				37,110		37,110
Investment income				2,498		2,498
Interest and debt expense		3,166				3,166
Depreciation and amortization		40,560				40,560
Operating income		209,615		34,353		243,968
Expenditures on long-lived assets		15,586				15,586
Goodwill		39,065				39,065
Capital lease additions		33,560				33,560
Total assets		1,132,766		219,694		1,352,460
2016
External revenue	$	3,121,210	$	46,424	$	3,167,634
Internal revenue				36,118		36,118
Investment income				1,502		1,502
Interest and debt expense		3,794				3,794
Depreciation and amortization		35,796				35,796
Operating income		187,813		35,438		223,251
Expenditures on long-lived assets		22,645				22,645
Goodwill		31,134				31,134
Capital lease additions		61,504				61,504
Total assets		913,667		182,924		1,096,591
2015
External revenue	$	3,276,677	$	44,414	$	3,321,091
Internal revenue				31,342		31,342
Investment income				1,396		1,396
Interest and debt expense		2,949				2,949
Depreciation and amortization		29,102				29,102
Operating income		207,883		33,823		241,706
Expenditures on long-lived assets		4,804				4,804
Goodwill		31,134				31,134
Capital lease additions		49,491				49,491
Total assets		842,550		148,968		991,518