Leases (Details 1) - USD ($) $ in Thousands	Jun. 29, 2019		Dec. 29, 2018
Leases [Abstract]
ROU lease assets	$ 108,879	[1]	$ 0
Operating lease liabilities, current	27,449
Operating lease liabilities, non-current	93,452	[1]	$ 0
Total lease liabilities	$ 120,901
Operating leases, weighted average remaining lease term	5 years 3 months 18 days
Operating lease, weighted average discount rate	4.50%

[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 6 in the notes to condensed consolidated financial statements.