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Revenue Recognition and Deferred Revenue (Policies) | 12 Months Ended
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Dec. 31, 2020
Revenue Recognition and Deferred Revenue [Abstract] |
Revenue | Revenue is recognized when obligations under the terms of a contract (i.e., purchase orders) with our customers are satisfied; generally, this occurs with the transfer of control of our products at a point in time. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods. The shipping cost incurred by us to deliver products to our customers is recorded in cost of sales. The expected costs associated with our warranties continue to be recognized as an expense when the products are sold.

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