Quarterly report pursuant to Section 13 or 15(d)

Impairment of Long-lived Assets (Details)

v3.10.0.1
Impairment of Long-lived Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 24, 2017
Sep. 30, 2018
Sep. 24, 2017
Impairment of Long-lived Assets [Abstract]        
Loss on asset impairment $ 12,336 $ 0 $ 12,336 $ 0