Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015
United States federal [Member]
Summary of tax credit carryforwards
Tax credit carryforwards	$ 132,426	[1]
California State [Member]
Summary of tax credit carryforwards
Tax credit carryforwards	28,396
States other than California [Member]
Summary of tax credit carryforwards
Tax credit carryforwards	5,956
Foreign Jurisdiction [Member]
Summary of tax credit carryforwards
Tax credit carryforwards	$ 13,349

[1] Certain of Cadence’s foreign tax credits are anticipated and as a result do not yet have an expiration period.