Summary of Significant Accounting Policies - New Accounting Standards (Details Textual) - USD ($) $ in Thousands	Dec. 28, 2019		Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 100,343	[1]		$ 0
Operating lease liability	$ 110,340
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets			$ 80,000
Operating lease liability			$ 80,000

[1] * Cadence adopted Topic 842, the new accounting standard for leasing arrangements on December 30, 2018, the first day of fiscal 2019. For additional information regarding Cadence’s leases, see Note 7 in the notes to consolidated financial statements.