XML 66 R55.htm IDEA: XBRL DOCUMENT v3.19.2
Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Dec. 30, 2018
Income Tax Disclosure [Abstract]          
Net income tax expense (benefit) $ 27,000 $ 29,000 $ (241,000) $ 90,000  
Unrecognized tax benefits that would affect effective tax rate $ 0   $ 0   $ 0