Income Taxes (Details 4) $ in Thousands	Dec. 30, 2017 USD ($)
United States federal [Member]
Summary of operating loss carryforward
Operating loss carry forwards	$ 13,638
California State [Member]
Summary of operating loss carryforward
Operating loss carry forwards	198,173
States other than California [Member]
Summary of operating loss carryforward
Operating loss carry forwards	3,081
Foreign Tax Authority [Member]
Summary of operating loss carryforward
Operating loss carry forwards	$ 866