Segment Reporting and Geographic Information (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 24, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 102,225	$ 99,425
UK [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	69,956	73,033
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	5,587	7,737
Greece [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	15,941	9,653
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 10,741	$ 9,002