Revenue Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Products and Services

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 six months ended June 30, 2018 and July 1, 2017:

	Three Months Ended				Six Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Functional Verification, including Emulation and Prototyping Hardware	23	%	23	%	25	%	23	%
Digital IC Design and Signoff	30	%	30	%	29	%	29	%
Custom IC Design	26	%	26	%	26	%	26	%
System Interconnect and Analysis	9	%	10	%	9	%	10	%
IP	12	%	11	%	11	%	12	%
Total	100	%	100	%	100	%	100	%

Contract Balances

Cadence’s contract balances as of June 30, 2018 were as follows:

	As of
	June 30, 2018		December 30, 2017
			As Adjusted
	(In thousands)
Contract assets	$	8,305	$	3,964
Deferred revenue	373,990		336,060