Revenue (Tables)

9 Months Ended

Sep. 29, 2018

Revenue from Contract with Customer [Abstract]

Revenue from external customers by product group

The following table shows the percentage of product and related maintenance revenue contributed by each of Cadence’s five product groups and services for the three and nine months ended September 29, 2018 and September 30, 2017:

	Three Months Ended				Nine Months Ended
	September 29, 2018		September 30, 2017		September 29, 2018		September 30, 2017
Functional Verification, including Emulation and Prototyping Hardware	22	%	21	%	24	%	22	%
Digital IC Design and Signoff	30	%	30	%	29	%	29	%
Custom IC Design	26	%	28	%	26	%	27	%
System Interconnect and Analysis	9	%	10	%	9	%	10	%
IP	13	%	11	%	12	%	12	%
Total	100	%	100	%	100	%	100	%

Contract Balances

Cadence’s contract balances as of September 29, 2018 were as follows:

	As of
	September 29, 2018		December 30, 2017
			As Adjusted
	(In thousands)
Contract assets	$	15,151	$	3,964
Deferred revenue	378,511		336,060