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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Customers Comprising 10% or More of Total Revenues

The following table sets forth revenue generated from customers which comprise 10% or more of total revenue for the periods indicated: 

		Years Ended December 31,
		2020				2019				2018
Comcast Corporation			27	%		*				*
SK hynix Inc.		*					17	%			12	%
Intel Corporation		*					11	%		*
Samsung Electronics, Co. Ltd.		*				*					38	%

* denotes less than 10% of total revenue.

Schedule of Estimated Useful Life

Property and equipment are recorded at cost, less accumulated depreciation. Depreciation is calculated using the straight-line method over the related assets’ estimated useful lives:

Equipment, furniture and other		1 to 5 years
Leasehold improvements		Lesser of related lease term or 5 years
Building and improvements		Up to 30 years

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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Schedule of property plant and equipment estimated useful life.

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