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Note 6 - Pension Plans (Tables) - Pension Plan [Member]

12 Months Ended

Sep. 29, 2019

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

(Thousands of Dollars)		2019				2018				2017
Service cost for benefits earned during the year			36				48				84
Interest cost on projected benefit obligation			6,563				5,754				5,394
Expected return on plan assets			(8,073	)			(7,933	)			(7,878	)
Amortization of net loss			1,135				2,025				2,947
Amortization of prior service benefit			(100	)			(136	)			(136	)
Net periodic pension cost (benefit)			(439	)			(242	)			411

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

(Thousands of Dollars)		2019				2018
Benefit obligation, beginning of year			176,531				191,645
Service cost			36				48
Interest cost			6,563				5,754
Actuarial loss (gain)			20,687				(9,464	)
Benefits paid			(11,448	)			(11,452	)
Benefit obligation, end of year			192,369				176,531
Fair value of plan assets, beginning of year:			151,255				149,762
Actual return on plan assets			8,705				10,576
Benefits paid			(11,448	)			(11,452	)
Administrative expenses paid			(2,163	)			(2,571	)
Employer contributions			650				4,940
Fair value of plan assets, end of year			146,999				151,255
Funded status			(45,370	)			(25,276	)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

		September 29				September 30
(Thousands of Dollars)		2019				2018
Pension obligations			(45,370	)			(25,276	)
Accumulated other comprehensive loss (before income taxes)			(53,066	)			(31,882	)

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

		September 29				September 30
(Thousands of Dollars)		2019				2018
Unrecognized net actuarial loss			(53,072	)			(31,988	)
Unrecognized prior service benefit			6				106
			(53,066	)			(31,882	)

Defined Benefit Plan, Assumptions [Table Text Block]

		September 29				September 30
(Percent)		2019				2018
Discount rate			3.1				4.2

(Percent)		2019				2018				2017
Discount rate - service cost			4.2				3.7				3.5
Discount rate - interest cost			3.9				3.1				2.8
Expected long-term return on plan assets			5.5				5.5				5.5

Defined Benefit Plan, Plan Assets, Allocation [Table Text Block]

(Percent)		Policy Allocation					Actual Allocation
		September 29				September 29				September 30
Asset Class		2019				2019				2018
Equity securities			50				49				50
Debt securities			35				34				32
TIPS			5				5				4
Hedge fund investments			10				10				10
Cash and cash equivalents			—				2				4

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

(Thousands of Dollars)		NAV				Level 1				Level 2				Level 3
Cash and cash equivalents			—				2,970				—				—
Domestic equity securities			9,524				8,971				40,593				—
International equity securities			—				6,525				7,283				—
TIPS			—				6,918				—				—
Debt securities			—				26,392				24,190				—
Hedge fund investments			15,733				—				—				—

(Thousands of Dollars)		NAV				Level 1				Level 2				Level 3
Cash and cash equivalents			—				5,537				—				—
Domestic equity securities			10,045				12,573				40,083				—
International equity securities			—				7,070				7,560				—
TIPS			—				6,535				—				—
Debt securities			—				25,673				22,523				—
Hedge fund investments			15,767				—				—				—

Schedule of Expected Benefit Payments [Table Text Block]

(Thousands of Dollars)
2020		12,452
2021		11,770
2022		11,711
2023		11,725
2024		11,679
2025-2029		56,172

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