Property, Plant & Equipment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 26, 2014	Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 604,766	$ 461,192
Less: accumulated depreciation		201,675	171,437
Property, Plant And Equipment, Net		403,091	289,755
Proceeds from sale of property, plant, and equipment	$ 3,300	26	3,355	$ 503
Gain on sale of properties	$ 400
Assets held for sale		900	1,000
Purchase of commercial office building			$ 19,700	109,800
Term of contract			7 years 6 months
Depreciation		48,200	$ 38,100	37,400
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		43,537	45,842
Purchase of commercial office building				35,500
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		248,390	61,712
Purchase of commercial office building				$ 74,300
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		61,455	56,665
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		70,143	47,639
Computer Systems and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		136,666	108,225
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		25,489	13,540
Cinema equipment provided under operating leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		7,638	0
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		$ 11,448	$ 127,569