Segment Reporting and Significant Concentration (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Summary of Revenue from Significant Customers

Revenue from these customers represented the following percentages of our total revenue for the following years:

	2020			2019			2018
Comcast		22	%		23	%		25	%
Charter		21	%		20	%		20	%

Summary of Net Billed Accounts Receivable from Significant Customers

As of December 31, 2020 and 2019, the percentage of net billed accounts receivable balances attributable to these customers were as follows:

	As of December 31,
	2020			2019
Comcast		19	%		24	%
Charter		20	%		24	%