Customer Concentration (Tables)

3 Months Ended

Mar. 31, 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 and contract assets, net balances of 10% or greater of total accounts receivable, net and contract assets, net from external customers:

	Percentage of Total Revenues from External Customers		Percentage of Accounts Receivable, Net and Contract Assets, Net from External Customers
	Three Months Ended March 31,		March 31,	December 31,
	2021	2020	2021	2020
Customer A	15%	20%	11%	14%
Customer B	12%	12%	11%	12%
Customer C	13%	12%	12%	*
Customer D	*	14%	*	*

* Less than 10%