Revenue (Details) - USD ($)	3 Months Ended
	Dec. 30, 2018	Dec. 24, 2017	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Unearned revenue	$ 23,430,000		$ 23,895,000
Deferred Revenue, Revenue Recognized	15,727,000
Subscription	46,268,000	$ 48,269,000
Advertising and marketing services	75,962,000	84,661,000
Digital Services Revenue	4,677,000	3,661,000
Other Revenue	9,294,000	7,195,000
Other revenues, net	13,971,000	10,856,000
Revenues	$ 136,201,000	$ 143,786,000