Income Taxes (Details 4) $ in Thousands	Jan. 02, 2021 USD ($)
United States federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards	$ 743
Tax credit carryforward	96,417	[1]
California State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards	27,093
Tax credit carryforward	63,130
States other than California [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards	1,564
Tax credit carryforward	12,023
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards	2,322
Tax credit carryforward	$ 25,866

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