Segment Reporting and Geographic Information (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 24, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 94,579	$ 99,425
UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	69,508	73,033
ITALY
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	6,705	7,737
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 18,366	$ 18,655