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Prepaid Expenses and Other Assets
 6 Months Ended
Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid Expenses and Other Assets Prepaid Expenses and Other Assets
Prepaid expenses and other assets consist of the following:
June 30, 2021December 31, 2020
Equipment (1)124 300 
Insurance17 18 
Advertising reimbursements (2)25 11 
Income taxes18 4 
Other (3)60 42 
Prepaid expenses and other assets$244 $375 
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(1)    Reflects refundable deposits on expected purchases, primarily of rental equipment, pursuant to advanced purchase agreements. Such deposits are presented as a component of our cash flow from operations when paid. We expect to purchase and receive the equipment in 2021. During the six months ended June 30, 2021, new deposits were $109 and purchases of equipment that we had placed deposits on were $285.
(2)    Reflects reimbursements due for advertising that promotes a vendor’s products or services.
(3)    Includes multiple items, none of which are individually significant.