CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance, beginning of period (in shares) at Sep. 30, 2022		10,192,051
Balance, beginning of period at Sep. 30, 2022		$ 512	$ 87,351	$ 402,821	$ 620	$ (3,290)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				5,879
Dividends declared				(3,126)
Award of non-vested shares (in shares)		56,799
Award of non-vested shares		$ 2	(1,381)			1,379
Stock-based compensation			953
Currency translation adjustment					2,937
Change in pension plans, net of tax					8
Purchase of treasury stock at cost (in shares)		(7,613)
Purchase of treasury stock at cost						(444)
Balance, end of period (in shares) at Dec. 30, 2022		10,241,237
Balance, end of period at Dec. 30, 2022		$ 514	86,923	405,574	3,565	(2,355)
Balance, beginning of period (in shares) at Sep. 30, 2022		10,192,051
Balance, beginning of period at Sep. 30, 2022		$ 512	87,351	402,821	620	(3,290)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 20,740
Currency translation adjustment	3,444
Balance, end of period (in shares) at Mar. 31, 2023		10,254,911
Balance, end of period at Mar. 31, 2023	507,407	$ 514	87,150	417,274	4,080	(1,611)
Balance, beginning of period (in shares) at Dec. 30, 2022		10,241,237
Balance, beginning of period at Dec. 30, 2022		$ 514	86,923	405,574	3,565	(2,355)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,861			14,861
Dividends declared				(3,161)
Award of non-vested shares (in shares)		13,674
Award of non-vested shares		$ 0	(744)			744
Stock-based compensation			971
Currency translation adjustment	507				507
Unrealized gain (loss) on available-for-sale securities, net of tax	0
Change in pension plans, net of tax					8
Balance, end of period (in shares) at Mar. 31, 2023		10,254,911
Balance, end of period at Mar. 31, 2023	507,407	$ 514	87,150	417,274	4,080	(1,611)
Balance, beginning of period (in shares) at Sep. 29, 2023		10,250,949
Balance, beginning of period at Sep. 29, 2023	499,737	$ 514	88,234	409,574	3,323	(1,908)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,955
Dividends declared				(3,347)
Award of non-vested shares (in shares)		37,712
Award of non-vested shares		$ 2	(2)
Stock-based compensation			598
Currency translation adjustment					3,059
Unrealized gain (loss) on available-for-sale securities, net of tax					102
Change in pension plans, net of tax					7
Purchase of treasury stock at cost (in shares)		(4,661)
Purchase of treasury stock at cost						(241)
Balance, end of period (in shares) at Dec. 29, 2023		10,284,000
Balance, end of period at Dec. 29, 2023		$ 516	88,830	410,182	6,491	(2,149)
Balance, beginning of period (in shares) at Sep. 29, 2023		10,250,949
Balance, beginning of period at Sep. 29, 2023	499,737	$ 514	88,234	409,574	3,323	(1,908)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,111
Currency translation adjustment	680
Balance, end of period (in shares) at Mar. 29, 2024		10,301,342
Balance, end of period at Mar. 29, 2024	500,089	$ 517	88,990	408,970	4,102	(2,490)
Balance, beginning of period (in shares) at Dec. 29, 2023		10,284,000
Balance, beginning of period at Dec. 29, 2023		$ 516	88,830	410,182	6,491	(2,149)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,156			2,156
Dividends declared				(3,368)
Award of non-vested shares (in shares)		22,692
Award of non-vested shares		$ 1	(1)
Stock-based compensation			(180)
Currency translation adjustment	2,379				(2,379)
Unrealized gain (loss) on available-for-sale securities, net of tax	0				(18)
Change in pension plans, net of tax					8
Non-vested stock forfeitures (shares)		(5,350)
Non-vested stock forfeitures			341			(341)
Balance, end of period (in shares) at Mar. 29, 2024		10,301,342
Balance, end of period at Mar. 29, 2024	$ 500,089	$ 517	$ 88,990	$ 408,970	$ 4,102	$ (2,490)