CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - 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 (shares) at Sep. 29, 2017		9,996,199
Balance, beginning of period at Sep. 29, 2017		$ 503	$ 72,801	$ 166,905	$ 4,993	$ (2,198)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 40,669			40,669
Dividends declared				(4,746)
Issuance of stock under employee stock purchase plan (shares)		3,365
Issuance of stock under employee stock purchase plan			154
Award of non-vested shares (shares)		8,859
Award of non-vested shares			(227)			227
Stock-based compensation			2,297
Currency translation adjustment	(1,005)				(1,005)
Write off of currency translation adjustment (gain) loss	(2,378)				(2,378)
Change in pension plans, net of tax (of $593, $288 and $209 respectively)					1,877
Non-vested stock forfeitures			0			0
Purchase of treasury stock at cost (shares)		(9,377)
Purchase of treasury stock at cost						(675)
Balance, end of period (shares) at Sep. 28, 2018		9,999,046
Balance, end of period at Sep. 28, 2018		$ 503	75,025	202,828	3,487	(2,646)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	51,413			51,413
Dividends declared				(5,864)
Issuance of stock under employee stock purchase plan (shares)		1,594
Issuance of stock under employee stock purchase plan			79
Award of non-vested shares (shares)		59,311
Award of non-vested shares		$ 1	(1,594)			1,593
Stock-based compensation			2,346
Currency translation adjustment	(2,245)				(2,245)
Write off of currency translation adjustment (gain) loss	$ (761)				(761)
Change in pension plans, net of tax (of $593, $288 and $209 respectively)					1,077
Non-vested stock forfeitures (shares)	(4,290)
Purchase of treasury stock at cost (shares)		(9,890)
Purchase of treasury stock at cost						(708)
Balance, end of period (shares) at Sep. 27, 2019		10,045,771
Balance, end of period at Sep. 27, 2019	$ 324,534	$ 504	75,856	248,377	1,558	(1,761)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	55,233			55,233
Dividends declared				(7,179)
Issuance of stock under employee stock purchase plan (shares)		2,190
Issuance of stock under employee stock purchase plan			126
Award of non-vested shares (shares)		43,967
Award of non-vested shares						1
Stock-based compensation			2,686
Currency translation adjustment	2,533				2,533
Write off of currency translation adjustment (gain) loss	0
Change in pension plans, net of tax (of $593, $288 and $209 respectively)					626
Non-vested stock forfeitures (shares)
Non-vested stock forfeitures						0
Purchase of treasury stock at cost (shares)		(7,129)
Purchase of treasury stock at cost						(460)
Balance, end of period (shares) at Oct. 02, 2020		10,084,799
Balance, end of period at Oct. 02, 2020	$ 378,100	$ 504	$ 78,668	$ 296,431	$ 4,717	$ (2,220)