Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

The following table disaggregates revenues by type within each of our business segments:

The following table summarizes the activity in our contract liabilities for the reporting period:


	Three Months Ended March 31, 2021
Contract liability balance, beginning of period(1)	$	89
Liabilities recognized during the period	30
Amounts recognized in revenue from beginning balance	(20)
Contract liability balance, end of period(1)	$	99
(1) Contract liabilities are included within Accrued liabilities and Other long-term liabilities in our consolidated balance sheets.

The following table summarizes our balances in these accounts for the periods indicated (other than contract liabilities disclosed above):


	Receivables		Contract Assets(1)
Beginning of period balance	$	636	$	127
End of period balance, March 31, 2021	641		117



(1) Contract assets are included primarily within Prepaid expenses, deposits and other current assets in our consolidated balance sheets.