Note K - Accumulated Other Comprehensive income (Loss), Net of Tax (Details) - USD ($)	3 Months Ended
	Mar. 25, 2016	Dec. 25, 2015	Sep. 25, 2015	Mar. 27, 2015	Dec. 26, 2014	Sep. 26, 2014
Translation Adjustment [Member]
Beginning Balance	$ 2,622,000	$ 4,953,000	$ 6,740,000	$ 11,941,000	$ 16,442,000	$ 20,779,000
Translation adjustment during the quarter	1,939,000	(2,331,000)	(1,787,000)	(5,838,000)	(4,501,000)	(4,337,000)
Net current period other comprehensive income	1,939,000	(2,331,000)	(1,787,000)	(5,838,000)	(4,501,000)	(4,337,000)
Ending Balance	4,561,000	2,622,000	4,953,000	6,103,000	11,941,000	16,442,000
Benefit Plan Adjustment [Member]
Beginning Balance	(40,677,000)	(41,482,000)	(42,221,000)	(35,719,000)	(36,234,000)	(36,722,000)
Amounts reclassified from accumulated other comprehensive income	671,000	805,000	739,000	542,000	515,000	488,000
Net current period other comprehensive income	671,000	805,000	739,000	542,000	515,000	488,000
Ending Balance	(40,006,000)	$ (40,677,000)	(41,482,000)	$ (35,177,000)	$ (35,719,000)	$ (36,234,000)
Beginning Balance			$ (35,481,000)
Ending Balance	$ (35,445,000)