Revenue Recognition
Revenue is recognized when: an arrangement exists; delivery has occurred, including transfer of title and risk of loss for product sales, or services have been rendered for service revenues; the price to the buyer is fixed or determinable; and collection is reasonably assured. Service revenues represent less than 10% of total net sales for 2013, 2012 and 2011. We, under specific conditions, permit our customers to return or exchange products. The provision for estimated sales returns is recorded concurrently with the recognition of revenue. The net impact on gross margin from estimated sales returns is included in allowances against trade accounts receivable in the consolidated balance sheet. We also have limited contractual relationships with certain of our customers and suppliers whereby we assume an agency relationship in the transaction. In such arrangements, we recognize as revenues the net fee associated with serving as an agent.
