Unaudited Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common	Common Class B	Common Stock	Common Stock Common	Common Stock Common Class B	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at May. 29, 2021	$ 121,560			$ 663			$ 62,707	$ 53,297	$ 4,893
Beginning Balance (in shares) at May. 29, 2021					11,160	2,097
Comprehensive income:
Net income (loss)	9,644							9,644
Foreign currency translation	(2,353)								(2,353)
Share-based compensation:
Restricted stock	339						339
Stock options	175						175
Options exercised	2,630			16			2,614
Options exercised (in shares)					331
Restricted stock issuance				4			(4)
Restricted stock issuance (in shares)					73
Class B converted to common					44	(44)
Dividends paid to:
Common	(2,047)							(2,047)
Common class B	(337)							(337)
Ending Balance at Feb. 26, 2022	129,611			683			65,831	60,557	2,540
Ending Balance (in shares) at Feb. 26, 2022					11,608	2,053
Beginning Balance at Nov. 27, 2021	125,413			672			63,794	58,476	2,471
Beginning Balance (in shares) at Nov. 27, 2021					11,338	2,097
Comprehensive income:
Net income (loss)	2,887							2,887
Foreign currency translation	69								69
Share-based compensation:
Restricted stock	105						105
Stock options	37						37
Options exercised	1,906			11			1,895
Options exercised (in shares)					226
Class B converted to common					44	(44)
Dividends paid to:
Common	(695)							(695)
Common class B	(111)							(111)
Ending Balance at Feb. 26, 2022	129,611			683			65,831	60,557	2,540
Ending Balance (in shares) at Feb. 26, 2022					11,608	2,053
Beginning Balance at May. 28, 2022	135,847			685			66,331	68,031	800
Beginning Balance (in shares) at May. 28, 2022		11,649	2,053		11,649	2,053
Comprehensive income:
Net income (loss)	18,213							18,213
Foreign currency translation	(710)								(710)
Share-based compensation:
Restricted stock	402						402
Stock options	328						328
Options exercised	3,413			20			3,393
Options exercised (in shares)					386
Restricted stock issuance	(69)			2			(71)
Restricted stock issuance (in shares)					49
Class B converted to common					1	(1)
Dividends paid to:
Common	(2,152)							(2,152)
Common class B	(332)							(332)
Ending Balance at Feb. 25, 2023	154,940			707			70,383	83,760	90
Ending Balance (in shares) at Feb. 25, 2023		12,085	2,052		12,085	2,052
Beginning Balance at Nov. 26, 2022	148,088			704			69,669	78,254	(539)
Beginning Balance (in shares) at Nov. 26, 2022					12,022	2,052
Comprehensive income:
Net income (loss)	6,340							6,340
Foreign currency translation	629								629
Share-based compensation:
Restricted stock	140						140
Stock options	66						66
Options exercised	511			3			508
Options exercised (in shares)					63
Dividends paid to:
Common	(724)							(724)
Common class B	(110)							(110)
Ending Balance at Feb. 25, 2023	$ 154,940			$ 707			$ 70,383	$ 83,760	$ 90
Ending Balance (in shares) at Feb. 25, 2023		12,085	2,052		12,085	2,052