Property, Plant & Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 954,731	$ 876,463
Less: accumulated depreciation	(417,299)	(362,281)
Property, Plant And Equipment, Net	537,432	514,182
Depreciation	55,500	54,800	$ 53,400
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	41,918	43,342
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	282,924	283,474
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	66,730	66,866
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	128,525	111,603
Computer Systems and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	219,455	194,079
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	34,191	30,556
Cinema equipment provided under operating leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	161,372	139,201
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 19,616	$ 7,342