Revenue Recognition

3 Months Ended

Mar. 28, 2020

Revenue from Contract with Customer [Abstract]

Capitalization of Costs to Obtain a Contract

The ending balance of the Company’s capitalized costs to obtain a contract as of March 28, 2020 and December 28, 2019 were $0.2 million and $0.2 million, respectively. The Company's amortization expense was not material for each of the three months ended March 28, 2020 and March 30, 2019.

Disaggregation of Revenue

The following table presents the Company's revenue disaggregated by revenue source (in thousands):



	Three Months Ended
	March 28, 2020		March 30, 2019
Product	$	255,192	$	223,007
Services	75,081		69,700
Total revenue	$	330,273	$	292,707

The Company sells its products directly to customers who are predominantly service providers and to channel partners that sell on its behalf. The following table presents the Company's revenue disaggregated by geography, based on the shipping address of the customer and by sales channel (in thousands):



	Three Months Ended
	March 28, 2020		March 30, 2019
United States	$	170,526	$	132,522
Other Americas	19,688		15,132
Europe, Middle East and Africa	88,578		98,992
Asia Pacific	51,481		46,061
Total revenue	$	330,273	$	292,707



	Three Months Ended
	March 28, 2020		March 30, 2019
Direct	$	244,351	$	248,196
Indirect	85,922		44,511
Total revenue	$	330,273	$	292,707

Contract Balances

The following table provides information about receivables, contract assets and contract liabilities from contracts with customers (in thousands):



	March 28, 2020		December 28, 2019
Accounts receivable, net	$	272,278	$	349,645
Contract assets	$	34,806	$	22,814
Deferred revenue	$	129,842	$	139,820

Revenue recognized for the three months ended March 28, 2020 that was included in the deferred revenue balance at the beginning of the reporting period was $38.7 million. Changes in the contract asset and liability balances during the three months ended March 28, 2020 were not materially impacted by other factors.

Transaction Price Allocated to the Remaining Performance Obligation

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially satisfied) at the end of the reporting period (in thousands):



	Remainder of 2020		2021		2022		2023		2024		Thereafter		Total
Revenue expected to be recognized in the future as of March 28, 2020	$	453,406	$	37,172	$	11,538	$	6,056	$	1,802	$	449	$	510,423