| Segment Reporting Disclosure [Text Block] | (11) Revenue and Business Segments We account for our revenue in accordance with FASB ASC 606, Revenue from Contracts with Customers five four We have strategically transitioned from a refrigerated long-haul carrier to a multifaceted business offering a network of refrigerated and dry truck-based transportation capabilities across our five distinct business platforms – Truckload, Dedicated, Intermodal, Brokerage and MRTN de Mexico. Our Truckload segment provides a combination of regional short-haul and medium-to-long-haul full-load transportation services. We transport food and other consumer packaged goods that require a temperature-controlled or insulated environment, along with dry freight, across the United States and into and out of Mexico and Canada. Our agreements with customers are typically for one year. Our Dedicated segment provides customized transportation solutions tailored to meet individual customers’ requirements, utilizing temperature-controlled trailers, dry vans and other specialized equipment within the United States. Our agreements with customers range from three five Generally, we are paid by the mile for our Truckload and Dedicated services. We also derive Truckload and Dedicated revenue from fuel surcharges, loading and unloading activities, equipment detention and other accessorial services. The main factors that affect our Truckload and Dedicated revenue are the rate per mile we receive from our customers, the percentage of miles for which we are compensated, the number of miles we generate with our equipment and changes in fuel prices. We monitor our revenue production primarily through average Truckload and Dedicated revenue, net of fuel surcharges, per tractor per week. We also analyze our average Truckload and Dedicated revenue, net of fuel surcharges, per total mile, non-revenue miles percentage, the miles per tractor we generate, our fuel surcharge revenue, our accessorial revenue and our other sources of operating revenue. Our Intermodal segment transports our customers’ freight within the United States utilizing our refrigerated containers and our temperature-controlled trailers, each on railroad flatcars for portions of trips, with the balance of the trips using our tractors or, to a lesser extent, contracted carriers. The main factors that affect our Intermodal revenue are the rate per mile and other charges we receive from our customers. Our Brokerage segment develops contractual relationships with and arranges for third-party carriers to transport freight for our customers in temperature-controlled trailers and dry vans within the United States and into and out of Mexico through Marten Transport Logistics, LLC, which was established in 2007 and operates pursuant to brokerage authority granted by the United States Department of Transportation, or DOT. We retain the billing, collection and customer management responsibilities. The main factors that affect our Brokerage revenue are the rate per mile and other charges that we receive from our customers. Operating results of our MRTN de Mexico business which offers our customers door-to-door service between the United States and Mexico with our Mexican partner carriers is reported within our Truckload and Brokerage segments. Our customer agreements are typically for one-year We account for revenue of our Intermodal and Brokerage segments and revenue on freight transported by independent contractors within our Truckload and Dedicated segments on a gross basis because we are the principal service provider controlling the promised service before it is transferred to each customer. We are primarily responsible for fulfilling the promise to provide each specified service to each customer. We bear the primary risk of loss in the event of cargo claims by our customers. We also have complete control and discretion in establishing the price for each specified service. Accordingly, all such revenue billed to customers is classified as operating revenue and all corresponding payments to carriers for transportation services we arrange in connection with brokerage and intermodal activities and to independent contractor providers of revenue equipment are classified as purchased transportation expense within our consolidated condensed statements of operations. The following table sets forth for the periods indicated our operating revenue and operating income by segment. We do not prepare separate balance sheets by segment and, as a result, assets are not separately identifiable by segment.
Three Months
Ended March 31,
(In thousands)
2023
2022
Operating revenue:
Truckload revenue, net of fuel surcharge revenue $ 102,320 $ 95,170
Truckload fuel surcharge revenue 18,306 17,620
Total Truckload revenue 120,626 112,790
Dedicated revenue, net of fuel surcharge revenue 86,831 78,421
Dedicated fuel surcharge revenue 19,618 18,339
Total Dedicated revenue 106,449 96,760
Intermodal revenue, net of fuel surcharge revenue 23,401 25,605
Intermodal fuel surcharge revenue 5,188 6,037
Total Intermodal revenue 28,589 31,642
Brokerage revenue 42,359 46,089
Total operating revenue $ 298,023 $ 287,281
Operating income:
Truckload $ 10,041 $ 15,571
Dedicated 13,684 10,645
Intermodal 787 5,036
Brokerage 4,498 4,606
Total operating income $ 29,010 $ 35,858 Truckload segment depreciation expense was $15.3 million and $13.0 million, Dedicated segment depreciation expense was $11.8 million and $11.1 million, Intermodal segment depreciation expense was $1.9 million and $1.7 million, and Brokerage segment depreciation expense was $449,000 and $338,000 in the three-month periods ended March 31, 2023 and 2022, respectively. |
