Revenue Recognition Sales relate primarily to the sale of refined petroleum products, renewable fuels, crude oil, natural gas and propane and are recognized along with the related receivable upon delivery, net of applicable provisions for discounts and allowances. The Partnership may also provide for shipping costs at the time of sale, which are included in cost of sales. In addition, the Partnership generates revenue from its logistics activities when it engages in the storage, transloading and shipment of products owned by others. Revenue for logistics services is recognized as services are provided. The Partnership has certain logistics agreements that require counterparties to throughput a minimum volume over an agreed-upon period. These agreements may include make-up rights if the minimum volume is not met. The Partnership recognizes revenue associated with make-up rights at the earlier of when the make-up volume is shipped, the make-up right expires or when it is determined that the likelihood that the shipper will utilize the make-up right is remote. The Partnership also recognizes convenience store sales of gasoline, grocery and other merchandise and commissions on lottery at the time of the sale to the customer. Gasoline station rental income is recognized on a straight- line basis over the term of the lease. Product revenue is not recognized on exchange agreements, which are entered into primarily to acquire various refined petroleum products, renewable fuels and crude oil of a desired quality or to reduce transportation costs by taking delivery of products closer to the Partnerships end markets. The Partnership recognizes net exchange differentials due from exchange partners in sales upon delivery of product to an exchange partner. The amounts recorded for bad debts are generally based upon a specific analysis of aged accounts while also factoring in any new business conditions that might impact the historical analysis, such as market conditions and bankruptcies of particular customers. Bad debt provi