Correction of Errors in Previously Reported Fiscal Year 2022 and 2021 Annual Financial Statements - Statement of Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended									6 Months Ended			9 Months Ended			12 Months Ended
	Feb. 26, 2023	Nov. 27, 2022	Aug. 28, 2022	Feb. 27, 2022	Nov. 28, 2021	Aug. 29, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	Nov. 27, 2022	Nov. 28, 2021	Nov. 29, 2020	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021	May 28, 2023	May 29, 2022	May 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			29,513							29,513			29,513			29,513
Beginning balance	$ 71,143	$ 77,875	$ 87,823	$ 155,424	$ 193,117	$ 201,946	$ 207,997	$ 218,539	$ 229,835	$ 87,823	$ 201,946	$ 229,835	$ 87,823	$ 201,946	$ 229,835	$ 87,823	$ 201,946	$ 229,835
Issuance of stock under stock plans, net of shares withheld																	1
Taxes paid by Company for employee stock plans	(65)	(142)	(67)	(6)	(84)	(428)		(215)	(82)							(274)	(789)	(405)
Stock-based compensation	903	1,108	785	622	686	620	797	895	892							3,612	2,608	3,360
Net loss	(36,507)	(12,806)	(10,966)	(13,586)	(38,471)	(9,387)	(6,978)	(11,623)	(12,410)	(23,772)	(47,858)	(24,033)	(60,279)	(61,444)	(31,011)	(99,563)	(116,715)	(32,294)
Other comprehensive income, net of tax		286	300	104	176	366	387	401	304	586	542	705	586	646	1,092	$ 586	$ 772	1,450
Ending balance (in shares)																30,322	29,513
Ending balance	35,021	71,143	77,875	142,558	155,424	193,117	202,203	207,997	218,539	71,143	155,424	207,997	35,021	142,558	202,203	$ (4,230)	$ 87,823	201,946
As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	74,167	80,364	90,697	156,202	193,865	202,784	208,938	221,158	231,044	90,697	202,784	231,044	90,697	202,784	231,044	90,697	202,784	231,044
Issuance of stock under stock plans, net of shares withheld																	1
Taxes paid by Company for employee stock plans	(65)	(142)	(67)	(6)	(84)	(428)		(215)	(82)								(789)	(405)
Stock-based compensation	903	1,108	785	622	686	620	797	895	892								2,608	3,360
Net loss	(40,192)	(12,449)	(11,351)	(13,086)	(38,441)	(9,477)	(5,498)	(13,301)	(11,000)	(23,800)	(47,918)	(24,301)	(63,992)		(29,799)		(114,679)	(32,665)
Other comprehensive income, net of tax		286	300	104	176	366	387	401	304	586	542	705	586		1,092		772	1,450
Ending balance	34,207	74,167	80,364	143,724	156,202	193,865	204,624	208,938	221,158	74,167	156,202	208,938	34,207	143,724	204,624		90,697	202,784
Restatement
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(3,024)	(2,489)	(2,874)	(778)	(748)	(838)	(941)	(2,619)	(1,209)	(2,874)	(838)	(1,209)	(2,874)	(838)	(1,209)	$ (2,874)	(838)	(1,209)
Net loss	3,685	(357)	385	(500)	(30)	90	(1,480)	1,678	(1,410)	28	60	268	3,713		(1,212)		(2,036)	371
Other comprehensive income, net of tax		0	0	0	0	0	0	0	0	0	0	0	0		0		0	0
Ending balance	$ 814	$ (3,024)	$ (2,489)	$ (1,166)	$ (778)	$ (748)	$ (2,421)	$ (941)	$ (2,619)	$ (3,024)	$ (778)	$ (941)	$ 814	$ (1,166)	$ (2,421)		$ (2,874)	$ (838)
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	30,297	29,593	29,513	29,481	29,462	29,333	29,323	29,242	29,224	29,513	29,333	29,224	29,513	29,333	29,224	29,513	29,333	29,224
Beginning balance	$ 30	$ 30	$ 30	$ 29	$ 29	$ 29	$ 29	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29
Issuance of stock under stock plans, net of shares withheld (in shares)	22	76	80	1	19	129		81	18							181	180	109
Issuance of stock under stock plans, net of shares withheld																	$ 1
Ending balance (in shares)	30,319	30,297	29,593	29,482	29,481	29,462	29,323	29,323	29,242	30,297	29,481	29,323	30,319	29,482	29,323	30,322	29,513	29,333
Ending balance	$ 30	$ 30	$ 30	$ 29	$ 29	$ 29	$ 29	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 30	$ 29
Common Stock | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	30,297	29,593	29,513	29,481	29,462	29,333	29,323	29,242	29,224	29,513	29,333	29,224	29,513	29,333	29,224	29,513	29,333	29,224
Beginning balance	$ 30	$ 30	$ 30	$ 29	$ 29	$ 29	$ 29	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29
Issuance of stock under stock plans, net of shares withheld (in shares)	22	76	80	1	19	129		81	18								180	109
Issuance of stock under stock plans, net of shares withheld																	$ 1
Ending balance (in shares)	30,319	30,297	29,593	29,482	29,481	29,462	29,323	29,323	29,242	30,297	29,481	29,323	30,319	29,482	29,323		29,513	29,333
Ending balance	$ 30	$ 30	$ 30	$ 29	$ 29	$ 29	$ 29	$ 29	$ 29	$ 30	$ 29	$ 29	$ 30	$ 29	$ 29		$ 30	$ 29
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	173,858	168,070	167,352	166,327	165,725	165,533	164,068	163,388	162,578	167,352	165,533	162,578	167,352	165,533	162,578	167,352	165,533	162,578
Taxes paid by Company for employee stock plans	(65)	(142)	(67)	(6)	(84)	(428)		(215)	(82)							(274)	(789)	(405)
Stock-based compensation	903	1,108	785	622	686	620	797	895	892							3,612	2,608	3,360
Ending balance	174,243	173,858	168,070	166,943	166,327	165,725	164,865	164,068	163,388	173,858	166,327	164,068	174,243	166,943	164,865	174,276	167,352	165,533
Additional Paid-in Capital | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	174,036	168,070	167,352	166,327	165,725	165,533	164,068	163,388	162,578	167,352	165,533	162,578	167,352	165,533	162,578	167,352	165,533	162,578
Taxes paid by Company for employee stock plans	(65)	(142)	(67)	(6)	(84)	(428)		(215)	(82)								(789)	(405)
Stock-based compensation	903	1,108	785	622	686	620	797	895	892								2,608	3,360
Ending balance	174,268	174,036	168,070	166,943	166,327	165,725	164,865	164,068	163,388	174,036	166,327	164,068	174,268	166,943	164,865		167,352	165,533
Retained Earnings (Accumulated Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(102,745)	(89,939)	(78,973)	(10,116)	28,355	37,742	46,003	57,626	70,036	(78,973)	37,742	70,036	(78,973)	37,742	70,036	(78,973)	37,742	70,036
Net loss	(36,507)	(12,806)	(10,966)	(13,586)	(38,471)	(9,387)	(6,978)	(11,623)	(12,410)							(99,563)	(116,715)	(32,294)
Ending balance	(139,252)	(102,745)	(89,939)	(23,702)	(10,116)	28,355	39,025	46,003	57,626	(102,745)	(10,116)	46,003	(139,252)	(23,702)	39,025	(178,536)	(78,973)	37,742
Retained Earnings (Accumulated Deficit) | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(99,899)	(87,450)	(76,099)	(9,338)	29,103	38,580	46,944	60,245	71,245	(76,099)	38,580	71,245	(76,099)	38,580	71,245	(76,099)	38,580	71,245
Net loss	(40,192)	(12,449)	(11,351)	(13,086)	(38,441)	(9,477)	(5,498)	(13,301)	(11,000)								(114,679)	(32,665)
Ending balance	(140,091)	(99,899)	(87,450)	(22,424)	(9,338)	29,103	41,446	46,944	60,245	(99,899)	(9,338)	46,944	(140,091)	(22,424)	41,446		(76,099)	38,580
Retained Earnings (Accumulated Deficit) | Restatement
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(2,846)	(2,489)	(2,874)	(666)	(748)	(838)	(941)	(2,619)	(1,209)	(2,874)	(838)	(1,209)	(2,874)	(838)	(1,209)	(2,874)	(838)	(1,209)
Net loss	3,685	(357)	385	(500)	(30)	90	(1,480)	1,678	(1,410)								(2,036)	371
Ending balance		(2,846)	(2,489)		(666)	(748)		(941)	(2,619)	(2,846)	(666)	(941)					(2,874)	(838)
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0	(286)	(586)	(816)	(992)	(1,358)	(2,103)	(2,504)	(2,808)	(586)	(1,358)	(2,808)	(586)	(1,358)	(2,808)	(586)	(1,358)	(2,808)
Other comprehensive income, net of tax		286	300	104	176	366	387	401	304							586	772	1,450
Ending balance	0	0	(286)	(712)	(816)	(992)	(1,716)	(2,103)	(2,504)	0	(816)	(2,103)	0	(712)	(1,716)	0	(586)	(1,358)
Accumulated Other Comprehensive Loss | As Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0	(286)	(586)	(816)	(992)	(1,358)	(2,103)	(2,504)	(2,808)	(586)	(1,358)	(2,808)	(586)	(1,358)	(2,808)	$ (586)	(1,358)	(2,808)
Other comprehensive income, net of tax		286	300	104	176	366	387	401	304								772	1,450
Ending balance	$ 0	$ 0	$ (286)	$ (712)	$ (816)	$ (992)	$ (1,716)	$ (2,103)	$ (2,504)	$ 0	$ (816)	$ (2,103)	$ 0	$ (712)	$ (1,716)		$ (586)	$ (1,358)