Contract Balances (Tables)

12 Months Ended

Dec. 31, 2019

Contract Balances

Summary of activity in the allowance for doubtful accounts

Allowance for doubtful accounts	Balance at Beginning of Year		Charged to Costs and Expenses		Deductions		Balance at End of Year
	(In thousands)
For the years ended:
December 31, 2019	$	16,966	$	69,866	$	(67,552)	$	19,280
December 31, 2018	$	15,511	$	98,575	$	(97,120)	$	16,966
December 31, 2017	$	18,399	$	124,126	$	(127,014)	$	15,511

Schedule of changes in deferred revenue related to contracts with subscribers

	Contract
	Liabilities
	(In thousands)
Balance as of December 31, 2018	$	635,018
Recognition of unearned revenue		(7,197,364)
Deferral of revenue		7,175,618
Balance as of December 31, 2019	$	613,272