Quarterly report pursuant to Section 13 or 15(d)


9 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
Revenue Recognition
Net sales include products and shipping and handling charges, net of estimates for customer allowances. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products. All revenue is recognized when we satisfy our performance obligations under the contract. We recognize revenue by transferring the promised products to the customer, with the majority of revenue recognized at the point in time the customer obtains control of the products. We recognize revenue for shipping and handling charges at the time the products are delivered to or picked up by the customer. The majority of our contracts have a single performance obligation and are short term in nature.
Revenues related to repair and maintenance services are recognized over time as services are provided. Payment for used vehicles, services, and merchandise are typically received at the point when control transfers to the customer or in accordance with payment terms customary to the business.
Accounts Receivable
Credit is extended based upon an evaluation of the customer’s financial condition. Accounts receivable are stated at their estimated net realizable value. The allowance for doubtful accounts is based on an analysis of customer accounts and our historical experience with accounts receivable write-offs. 
As performance obligations are satisfied within one year from a given reporting date, we omit disclosures of the transaction price apportioned to remaining performance obligations on open orders.
Disaggregation of Revenue
Our revenues related to the following types of business were as follows:
Three Months Ended September 30, Nine Months Ended September 30,
2020 2019 2020 2019
Automotive $ 560,327  $ —  $ 645,327  $ 240,000 
Aviation —  —  60,783  — 
Other 4,380  4,258  34,839  133,948 
Total revenues $ 564,707  $ 4,258  $ 740,949  $ 373,948