Correction of Errors in Previously Reported Fiscal Year 2022 and 2021 Annual Financial Statements - Balance Sheet (Details) - USD ($) $ / shares in Units, $ in Thousands	May 28, 2023	Feb. 26, 2023	Nov. 27, 2022	Aug. 28, 2022	May 29, 2022	Feb. 27, 2022	Nov. 28, 2021	Aug. 29, 2021	May 30, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	May 31, 2020
Current Assets:
Cash and cash equivalents	$ 19,091	$ 2,950	$ 5,938	$ 2,540	$ 991	$ 1,101	$ 609	$ 939	$ 763	$ 1,853	$ 2,476	$ 439
Accounts receivable, less allowance for credit losses	29,024	30,974	27,458	31,929	38,314	39,747	27,495	26,216	31,591	28,863	29,600	27,172
Inventories, net	40,841	42,042	38,420	36,154	36,000	34,758	39,715	36,869	33,930	31,441	32,404	28,909
Prepaid expenses and other current assets	4,919	1,473	1,673	1,986	2,053	1,818	1,441	1,324	1,502	5,946	6,795	13,934
Current assets, discontinued operations	0	5,687	45,592	36,896	39,310	49,716	81,293	73,318	77,515	90,219	80,554	74,513
Total Current Assets	93,875	83,126	119,081	109,505	116,668	127,140	150,553	138,666	145,301	158,322	151,829	144,967
Investment in non-public company									44,769	45,100	45,100	55,100
Property and equipment, net	134,390	126,326	120,187	118,190	118,670	110,503	108,761	108,400	107,131	95,789	94,988	93,764
Operating lease right-of-use assets	4,282	5,100	5,251	5,396	5,553	5,703	7,487	7,696	13,536	15,403	12,691	13,359
Goodwill	13,881	13,881	13,881	13,881	13,881	13,881	13,881	13,881	13,881	13,881	13,881	13,881
Trademarks/tradenames, net	4,200	4,200	4,200	4,200	4,200	4,200	4,200	4,200	4,200	4,200	4,200	4,200
Customer relationships			0	0	0	51	128	205	282	359	436	514
Other assets	2,917	2,699	2,492	2,680	2,889	2,935	3,083	3,251	3,418	3,375	1,132	1,193
Non-current Assets, discontinued operations	0	1,324	10,881	12,528	12,842	59,829	133,215	168,426	169,367	170,433	173,812	176,065
Total Assets	253,545	236,656	275,973	266,380	274,703	324,242	421,308	444,725	501,885	506,862	498,069	503,043
Current Liabilities:
Accounts payable	22,097	14,657	13,301	9,623	12,952	13,294	8,655	8,606	11,622	8,887	7,985	6,351
Accrued compensation	4,145	6,733	4,104	5,921	8,941	9,418	3,256	4,735	7,500	6,424	4,128	3,974
Other accrued liabilities	7,142	11,626	9,365	6,622	6,479	12,993	3,880	4,713	3,009	5,776	6,115	3,669
Current portion of lease liabilities	1,270	1,216	4,334	4,352	4,368	4,395	1,218	1,236	977	1,005	710	711
Deferred revenue	4,055	2,711	731	803	919	1,614	967	1,069	287	740	297	0
Line of credit	0		48,000	44,000	40,000	39,900	42,000	32,000	29,000	41,000	77,000	69,000
Current portion of long-term debt, net	580		98,953	98,569	98,178						11,189	11,027
Current liabilities, discontinued operations	0	458	16,832	8,845	4,744	8,790	62,416	51,290	49,457	61,481	66,454	58,961
Total Current Liabilities	39,289	37,401	195,620	178,735	176,581	90,404	122,392	103,649	101,852	125,313	173,878	153,693
Long-term debt, net	84,256	98,900			0	79,598	124,194	123,833	164,902	145,051	82,000	93,919
Long-term lease liabilities	9,709	9,998	7,020	7,294	7,658	7,848	11,344	11,655	17,375	17,919	15,475	16,016
Deferred taxes, net	380	80	10	124	126	796	1,201	3,949	5,975	6,104	6,631	8,877
Other non-current liabilities	3,114	203	201	199	190	544	1,932	2,376	2,870	3,032	4,024	4,138
Non-current liabilities, discontinued operations	0	518	1,979	2,153	2,325	2,494	4,821	6,146	6,965	7,240	8,064	7,861
Total Liabilities	218,457	163,100	204,830	188,505	186,880	181,684	265,884	251,608	299,939	304,659	290,072	284,504
Stockholders’ (Deficit) Equity:
Common stock, $0.001 par value; 50,000 shares authorized	30	30		30	30	29	29	29	29	29	29	29
Additional paid-in capital	174,276	174,243	173,858	168,070	167,352	166,943	166,327	165,725	165,533	164,865	164,068	163,388
Accumulated deficit	(178,536)	(139,252)	(102,745)	(89,939)	(78,973)	(23,702)	(10,116)	28,355	37,742	39,025	46,003	57,626
Accumulated other comprehensive loss	0			(286)	(586)	(712)	(816)	(992)	(1,358)	(1,716)	(2,103)	(2,504)
Total Stockholders’ (Deficit) Equity	(4,230)	35,021	71,143	77,875	87,823	142,558	155,424	193,117	201,946	202,203	207,997	218,539	$ 229,835
Total Liabilities, Convertible Preferred Stock and Stockholders’ (Deficit) Equity	$ 253,545	236,656	275,973	266,380	$ 274,703	324,242	421,308	444,725	501,885	506,862	498,069	503,043
Common stock, shares authorized (in shares)	50,000,000				50,000,000
Common stock, par value (in dollars per share)	$ 0.001				$ 0.001
As Reported
Current Assets:
Cash and cash equivalents		2,950	6,830	4,222	$ 1,643	1,854	1,091	1,447	1,159	2,248	2,491	589
Accounts receivable, less allowance for credit losses		32,371	35,689	40,934	48,172	49,559	65,276	61,956	41,430	69,577	66,545	65,027
Inventories, net		48,696	77,524	64,285	66,845	73,700	79,433	69,415	63,076	76,779	71,202	59,998
Prepaid expenses and other current assets		4,422	7,049	7,157	7,052	6,924	8,721	9,591	5,038	14,323	13,949	21,753
Current assets, discontinued operations		0	0	0	0	0	0	0	37,618	0	0	0
Total Current Assets		88,439	127,092	116,598	123,712	132,037	154,521	142,409	148,321	162,927	154,187	147,367
Investment in non-public company									0	45,100	45,100	56,900
Property and equipment, net		120,799	118,852	117,551	118,531	123,209	179,929	180,460	120,286	168,693	170,973	171,413
Operating lease right-of-use assets		5,924	7,951	8,229	8,580	8,796	11,979	14,299	17,098	23,528	21,070	22,109
Goodwill		13,881	13,881	13,881	13,881	33,916	37,329	69,386	33,916	69,386	69,386	69,386
Trademarks/tradenames, net		4,400	7,400	8,700	8,700	17,100	25,328	25,328	17,100	25,328	25,328	25,328
Customer relationships			1,292	1,346	1,400	7,476	9,799	10,295	8,532	11,288	11,784	12,281
Other assets		2,710	2,605	2,793	3,002	3,048	3,239	3,442	3,531	3,573	1,332	1,396
Non-current Assets, discontinued operations		0	0	0	0	0	0	0	154,140	0	0	0
Total Assets		236,153	279,073	269,098	277,806	325,582	422,124	445,619	502,924	509,823	499,160	506,180
Current Liabilities:
Accounts payable		14,762	27,971	16,366	15,802	20,014	59,098	46,355	16,298	56,323	60,892	50,722
Accrued compensation		6,733	4,602	6,373	9,238	9,757	7,214	9,173	7,754	11,218	7,689	8,895
Other accrued liabilities		12,012	10,426	7,832	7,647	14,083	9,804	10,855	3,955	11,186	12,715	9,607
Current portion of lease liabilities		1,455	5,013	5,021	5,026	5,045	2,988	4,054	1,600	4,027	3,785	4,001
Deferred revenue		2,711	731	803	919	1,614	1,160	1,216	637	1,595	644	477
Line of credit			48,000	44,000	40,000	39,900	42,000	32,000	29,000	41,000	77,000	69,000
Current portion of long-term debt, net			98,953	98,569	98,178						11,189	11,027
Current liabilities, discontinued operations		0	0	0	0	0	0	0	42,644	0	0	0
Total Current Liabilities		37,673	195,696	178,964	176,810	90,413	122,264	103,653	101,888	125,349	173,914	153,729
Long-term debt, net		98,964				79,598	124,194	123,833	164,902	145,051	82,000	93,919
Long-term lease liabilities		10,516	8,999	9,447	9,983	10,342	14,203	17,072	20,359	24,430	22,206	23,018
Deferred taxes, net		80	10	124	126	961	1,367	4,091	6,140	6,608	6,745	9,359
Other non-current liabilities		203	201	199	190	544	3,894	3,105	2,870	3,761	5,357	4,997
Non-current liabilities, discontinued operations		0	0	0	0	0	0	0	3,981	0	0	0
Total Liabilities		163,436	204,906	188,734	187,109	181,858	265,922	251,754	300,140	305,199	290,222	285,022
Stockholders’ (Deficit) Equity:
Common stock, $0.001 par value; 50,000 shares authorized		30	30	30	30	29	29	29	29	29	29	29
Additional paid-in capital		174,268	174,036	168,070	167,352	166,943	166,327	165,725	165,533	164,865	164,068	163,388
Accumulated deficit		(140,091)	(99,899)	(87,450)	(76,099)	(22,536)	(9,338)	29,103	38,580	41,446	46,944	60,245
Accumulated other comprehensive loss				(286)	(586)	(712)	(816)	(992)	(1,358)	(1,716)	(2,103)	(2,504)
Total Stockholders’ (Deficit) Equity		34,207	74,167	80,364	90,697	143,724	156,202	193,865	202,784	204,624	208,938	221,158	231,044
Total Liabilities, Convertible Preferred Stock and Stockholders’ (Deficit) Equity		236,153	279,073	269,098	277,806	325,582	422,124	445,619	502,924	509,823	499,160	506,180
Restatement
Current Assets:
Cash and cash equivalents		0	0	0	0	0	0	0	0	0	0	0
Accounts receivable, less allowance for credit losses		(671)	(522)	(522)	(522)	(522)	(522)	(522)	(522)	0	0	0
Inventories, net		(3,437)	(5,936)	(4,860)	(4,833)	(2,591)	(1,824)	(1,350)	(1,053)	(1,473)	(578)	(620)
Prepaid expenses and other current assets		(1,205)	(1,553)	(1,711)	(1,689)	(1,784)	(1,622)	(1,871)	(930)	(3,132)	(1,780)	(1,780)
Current assets, discontinued operations		0	0	0	0	0	0	0	(515)	0	0	0
Total Current Assets		(5,313)	(8,011)	(7,093)	(7,044)	(4,897)	(3,968)	(3,743)	(3,020)	(4,605)	(2,358)	(2,400)
Investment in non-public company									44,769	0	0	(1,800)
Property and equipment, net		5,933	5,001	4,437	4,035	3,557	3,152	2,849	2,312	1,644	1,267	1,063
Operating lease right-of-use assets		(117)	(90)	(62)	(94)	0	0	0	0	0	0	0
Goodwill		0	0	0	0	0	0	0	0	0	0	0
Trademarks/tradenames, net		0	0	0	0	0	0	0	0	0	0	0
Customer relationships			0	0	0	0	0	0	0	0	0	0
Other assets		0	0	0	0	0	0	0	0	0	0	0
Non-current Assets, discontinued operations		0	0	0	0	0	0	0	(45,100)	0	0	0
Total Assets		503	(3,100)	(2,718)	(3,103)	(1,340)	(816)	(894)	(1,039)	(2,961)	(1,091)	(3,137)
Current Liabilities:
Accounts payable		(79)	(25)	0	0	27	52	0	0	0	0	0
Accrued compensation		0	0	0	0	0	0	0	0	0	0	0
Other accrued liabilities		(193)	(51)	(229)	(229)	(36)	76	(4)	314	314	(36)	(36)
Current portion of lease liabilities		0	0	0	0	0	0	0	0	0	0	0
Deferred revenue		0	0	0	0	0	0	0	(350)	(350)	0	0
Line of credit			0	0	0	0	0	0	0	0	0	0
Current portion of long-term debt, net			0	0	0						0	0
Current liabilities, discontinued operations		0	0	0	0	0	0	0	0	0	0	0
Total Current Liabilities		(272)	(76)	(229)	(229)	(9)	128	(4)	(36)	(36)	(36)	(36)
Long-term debt, net		(64)				0	0	0	0	0	0	0
Long-term lease liabilities		0	0	0	0	0	0	0	0	0	0	0
Deferred taxes, net		0	0	0	0	(165)	(166)	(142)	(165)	(504)	(114)	(482)
Other non-current liabilities		0	0	0	0	0	0	0	0	0	0	0
Non-current liabilities, discontinued operations		0	0	0	0	0	0	0	0	0	0	0
Total Liabilities		(336)	(76)	(229)	(229)	(174)	(38)	(146)	(201)	(540)	(150)	(518)
Stockholders’ (Deficit) Equity:
Common stock, $0.001 par value; 50,000 shares authorized		0	0	0	0	0	0	0	0	0	0	0
Additional paid-in capital		(25)	(178)	0	0	0	0	0	0	0	0	0
Accumulated deficit		839	(2,846)	(2,489)	(2,874)	(1,166)	(778)	(748)	(838)	(2,421)	(941)	(2,619)
Accumulated other comprehensive loss				0	0	0	0	0	0	0	0	0
Total Stockholders’ (Deficit) Equity		814	(3,024)	(2,489)	(2,874)	(1,166)	(778)	(748)	(838)	(2,421)	(941)	(2,619)	$ (1,209)
Total Liabilities, Convertible Preferred Stock and Stockholders’ (Deficit) Equity		503	(3,100)	(2,718)	(3,103)	(1,340)	(816)	(894)	(1,039)	(2,961)	(1,091)	(3,137)
As Restated
Current Assets:
Cash and cash equivalents		2,950	6,830	4,222	1,643	1,854	1,091	1,447	1,159	2,248	2,491	589
Accounts receivable, less allowance for credit losses		31,700	35,167	40,412	47,650	49,037	64,754	61,434	40,908	69,577	66,545	65,027
Inventories, net		45,259	71,588	59,425	62,012	71,109	77,609	68,065	62,023	75,306	70,624	59,378
Prepaid expenses and other current assets		3,217	5,496	5,446	5,363	5,140	7,099	7,720	4,108	11,191	12,169	19,973
Current assets, discontinued operations		0	0	0	0	0	0	0	37,103	0	0	0
Total Current Assets		83,126	119,081	109,505	116,668	127,140	150,553	138,666	145,301	158,322	151,829	144,967
Investment in non-public company									44,769	45,100	45,100	55,100
Property and equipment, net		126,732	123,853	121,988	122,566	126,766	183,081	183,309	122,598	170,337	172,240	172,476
Operating lease right-of-use assets		5,807	7,861	8,167	8,486	8,796	11,979	14,299	17,098	23,528	21,070	22,109
Goodwill		13,881	13,881	13,881	13,881	33,916	37,329	69,386	33,916	69,386	69,386	69,386
Trademarks/tradenames, net		4,400	7,400	8,700	8,700	17,100	25,328	25,328	17,100	25,328	25,328	25,328
Customer relationships			1,292	1,346	1,400	7,476	9,799	10,295	8,532	11,288	11,784	12,281
Other assets		2,710	2,605	2,793	3,002	3,048	3,239	3,442	3,531	3,573	1,332	1,396
Non-current Assets, discontinued operations		0	0	0	0	0	0	0	109,040	0	0	0
Total Assets		236,656	275,973	266,380	274,703	324,242	421,308	444,725	501,885	506,862	498,069	503,043
Current Liabilities:
Accounts payable		14,683	27,946	16,366	15,802	20,041	59,150	46,355	16,298	56,323	60,892	50,722
Accrued compensation		6,733	4,602	6,373	9,238	9,757	7,214	9,173	7,754	11,218	7,689	8,895
Other accrued liabilities		11,819	10,375	7,603	7,418	14,047	9,880	10,851	4,269	11,500	12,679	9,571
Current portion of lease liabilities		1,455	5,013	5,021	5,026	5,045	2,988	4,054	1,600	4,027	3,785	4,001
Deferred revenue		2,711	731	803	919	1,614	1,160	1,216	287	1,245	644	477
Line of credit			48,000	44,000	40,000	39,900	42,000	32,000	29,000	41,000	77,000	69,000
Current portion of long-term debt, net			98,953	98,569	98,178						11,189	11,027
Current liabilities, discontinued operations		0	0	0	0	0	0	0	42,644	0	0	0
Total Current Liabilities		37,401	195,620	178,735	176,581	90,404	122,392	103,649	101,852	125,313	173,878	153,693
Long-term debt, net		98,900				79,598	124,194	123,833	164,902	145,051	82,000	93,919
Long-term lease liabilities		10,516	8,999	9,447	9,983	10,342	14,203	17,072	20,359	24,430	22,206	23,018
Deferred taxes, net		80	10	124	126	796	1,201	3,949	5,975	6,104	6,631	8,877
Other non-current liabilities		203	201	199	190	544	3,894	3,105	2,870	3,761	5,357	4,997
Non-current liabilities, discontinued operations		0	0	0	0	0	0	0	3,981	0	0	0
Total Liabilities		163,100	204,830	188,505	186,880	181,684	265,884	251,608	299,939	304,659	290,072	284,504
Stockholders’ (Deficit) Equity:
Common stock, $0.001 par value; 50,000 shares authorized		30	30	30	30	29	29	29	29	29	29	29
Additional paid-in capital		174,243	173,858	168,070	167,352	166,943	166,327	165,725	165,533	164,865	164,068	163,388
Accumulated deficit		(139,252)	(102,745)	(89,939)	(78,973)	(23,702)	(10,116)	28,355	37,742	39,025	46,003	57,626
Accumulated other comprehensive loss				(286)	(586)	(712)	(816)	(992)	(1,358)	(1,716)	(2,103)	(2,504)
Total Stockholders’ (Deficit) Equity		35,021	71,143	77,875	87,823	142,558	155,424	193,117	201,946	202,203	207,997	218,539
Total Liabilities, Convertible Preferred Stock and Stockholders’ (Deficit) Equity		236,656	275,973	266,380	274,703	324,242	421,308	444,725	501,885	506,862	498,069	503,043
Discontinued Operations
Current Assets:
Cash and cash equivalents		0	892	1,682	652	753	482	508	396	395	15	150
Accounts receivable, less allowance for credit losses		726	7,709	8,483	9,336	9,290	37,259	35,218	9,317	40,714	36,945	37,855
Inventories, net		3,217	33,168	23,271	26,012	36,351	37,894	31,196	28,093	43,865	38,220	30,469
Prepaid expenses and other current assets		1,744	3,823	3,460	3,310	3,322	5,658	6,396	2,606	5,245	5,374	6,039
Current assets, discontinued operations		5,687	45,592	36,896	39,310	49,716	81,293	73,318	40,412	90,219	80,554	74,513
Investment in non-public company									0	0	0	0
Property and equipment, net		406	3,666	3,798	3,896	16,263	74,320	74,909	15,467	74,548	77,252	78,712
Operating lease right-of-use assets		707	2,610	2,771	2,933	3,093	4,492	6,603	3,562	8,125	8,379	8,750
Goodwill		0	0	0	0	20,035	23,448	55,505	20,035	55,505	55,505	55,505
Trademarks/tradenames, net		200	3,200	4,500	4,500	12,900	21,128	21,128	12,900	21,128	21,128	21,128
Customer relationships			1,292	1,346	1,400	7,425	9,671	10,090	8,250	10,929	11,348	11,767
Other assets		11	113	113	113	113	156	191	113	198	200	203
Non-current Assets, discontinued operations		1,324	10,881	12,528	12,842	59,829	133,215	168,426	60,327	170,433	173,812	176,065
Current Liabilities:
Accounts payable		26	14,645	6,743	2,850	6,747	50,495	37,749	4,676	47,436	52,907	44,371
Accrued compensation		0	498	452	297	339	3,958	4,438	254	4,794	3,561	4,921
Other accrued liabilities		193	1,010	981	939	1,054	6,000	6,138	1,260	5,724	6,564	5,902
Current portion of lease liabilities		239	679	669	658	650	1,770	2,818	623	3,022	3,075	3,290
Deferred revenue		0	0	0	0	0	193	147	0	505	347	477
Line of credit			0	0	0	0	0	0	0	0	0	0
Current portion of long-term debt, net			0	0	0						0	0
Current liabilities, discontinued operations		458	16,832	8,845	4,744	8,790	62,416	51,290	6,813	61,481	66,454	58,961
Long-term debt, net		0				0	0	0	0	0	0	0
Long-term lease liabilities		518	1,979	2,153	2,325	2,494	2,859	5,417	2,984	6,511	6,731	7,002
Deferred taxes, net		0	0	0	0	0	0	0	0	0	0	0
Other non-current liabilities		0	0	0	0	0	1,962	729	0	729	1,333	859
Non-current liabilities, discontinued operations		518	1,979	2,153	2,325	2,494	4,821	6,146	2,984	7,240	8,064	7,861
Total Liabilities		0
Stockholders’ (Deficit) Equity:
Common stock, $0.001 par value; 50,000 shares authorized		0	0	0	0	0	0	0	0	0	0	0
Additional paid-in capital		0	0	0	0	0	0	0	0	0	0	0
Accumulated deficit		0	0	0	0	0	0	0	0	0	0	0
Accumulated other comprehensive loss				0	0	0	0	0	0	0	0	0
Total Stockholders’ (Deficit) Equity		0	0	0	0	0	0	0	0	0	0	0
Total Liabilities, Convertible Preferred Stock and Stockholders’ (Deficit) Equity		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0