Note 6 - Leases (Details Textual)	Mar. 16, 2020 USD ($)	Mar. 29, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 29, 2019 USD ($)
Operating Lease, Right-of-Use Asset		$ 72,677,000
Operating Lease, Liability, Total		71,907,000
Operating Lease, Liability, Current		8,299,000
Operating Lease, Liability, Noncurrent		$ 63,608,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months				3,403,000
Operating Leases, Future Minimum Payments, Due in Two Years				2,290,000
Operating Leases, Future Minimum Payments, Due in Three Years				2,238,000
Operating Leases, Future Minimum Payments, Due in Four Years				1,637,000
Operating Leases, Future Minimum Payments, Due in Five Years				1,367,000
Operating Leases, Future Minimum Payments, Due Thereafter				$ 4,991,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 10,709,000
Operating Lease, Liability, Current			2,281,000
Operating Lease, Liability, Noncurrent			$ 8,353,000
Lease Agreement with BH Media [Member]
Number of Real Estate Properties	68
Operating Lease, Annual Rent Payable	$ 8,000,000
Operating Lease, Percentage of Net Sales Proceeds	8.00%
Operating Lease, Right-of-Use Asset	$ 56,226,000
Operating Lease, Liability, Total	$ 56,226,000