Revenue

3 Months Ended

Mar. 31, 2020

Revenue

Revenue

7. Revenue

The majority of our revenues are derived from short-term contracts for fixed consideration. Product sales generally do not include right of return or other significant post-delivery obligations. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. Revenues are recognized when we satisfy a performance obligation by transferring control of the promised goods or providing services to our customers at a point in time, in an amount specified in the contract with our customer and that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts with customers contain a single performance obligation to provide agreed upon products or services. For contracts with multiple performance obligations, we allocate revenue to each performance obligation based on its relative standalone selling price. We do not assess whether promised goods or services are performance obligations if they are immaterial in the context of the contract with the customer. We do not incur any material costs of obtaining contracts.

We do not adjust the amount of consideration per the contract for the effects of a significant financing component when we expect, at contract inception, that the period between the transfer of a promised good or service to a customer and when the customer pays for that good or service will be one year or less, which is in substantially all cases. Payment terms and conditions vary, although terms generally include a requirement of payment within 30 to 45 days. Revenues

are recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. We treat shipping and handling associated with outbound freight as a fulfillment cost instead of as a separate performance obligation. We recognize the cost for the associated shipping and handling when incurred as an expense in cost of sales.

We disaggregate revenue into three categories: product revenues, rental revenues and field service and other revenues. We have predominately domestic operations, with a small amount of sales being generated in Australia. The following table presents our revenues disaggregated by category:

	Three Months Ended March 31,
	2020				2019
Product revenue	$	87,031	57	%	$	86,640	55	%
Rental revenue		36,163	23	%		38,497	24	%
Field service and other revenue		30,945	20	%		33,738	21	%
Total revenue	$	154,139	100	%	$	158,875	100	%

At March 31, 2020, we had a deferred revenue balance of $1.5 million compared to the December 31, 2019 balance of $1.4 million. Deferred revenue represents our obligation to transfer products to or perform services for a customer for which we have received cash or billed in advance. The revenue that has been deferred will be recognized upon product delivery or as services are performed. As of March 31, 2020, we did not have any contracts with an original length of greater than a year from which revenue is expected to be recognized in the future related to performance obligations that are unsatisfied.