Note 7 - Pension, Postretirement and Postemployment Defined Benefit Plans (Details Textual) - Pension Plan [Member]	3 Months Ended
	Dec. 29, 2019 USD ($)
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	$ 6,718,000