Customer Concentration (Tables)

9 Months Ended

Sep. 30, 2021

Risks and Uncertainties [Abstract]

Schedule of Revenue and Accounts Receivable by Major Customers

The following table shows external customers with revenues of 10% or greater of total revenues from external customers and external customers with accounts receivable, net of current expected credit losses and contract assets, net of current expected credit losses balances of 10% or greater of total accounts receivable, net of current expected credit losses from external customers and contract assets, net of current expected credit losses from external customers, respectively:

	Percentage of Total Revenues from External Customers				Percentage of Accounts Receivable, Net and Contract Assets, Net from External Customers
	Three Months Ended September 30,		Nine Months Ended September 30,		September 30,	December 31,
	2021	2020	2021	2020	2021	2020
Customer A	12%	*	14%	13%	*	14%
Customer B	15%	11%	13%	10%	*	12%
Customer C	11%	15%	11%	11%	*	*
Customer D	11%	13%	*	10%	*	*
Customer E	*	*	*	*	17%	*
Customer F	*	*	*	*	12%	*

* Less than 10%