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Stockholders' Equity - Stock Options (Details) - USD ($)						3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 01, 2023	Jun. 01, 2022	Jul. 01, 2021	Apr. 01, 2021	Mar. 15, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Number of Options
Outstanding, beginning balance (in shares)								7,179,375
Granted (in shares)								510,390
Canceled (in shares)								(8,050)
Exercised (in shares)								99,700
Expired/Forfeited (in shares)								(1,771,070)
Outstanding, ending balance (in shares)						5,810,945		5,810,945		7,179,375
Exercisable (in shares)						1,931,778		1,931,778
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)								$ 3.14
Granted (in dollars per share)								1.91
Canceled (in dollars per share)								1.86
Exercised (in dollars per share)								1.77
Expired/Forfeited (in dollars per share)								5.63
Outstanding, ending balance (in dollars per share)						$ 2.32		2.32		$ 3.14
Exercisable (in dollars per share)						$ 3.40		$ 3.40
Other disclosures
Outstanding Weighted Average Remaining Contractual Life (in Years)								5 years 6 months 21 days		4 years 11 months 4 days
Exercisable Weighted Average Remaining Contractual Life (in Years)								2 years 1 month 6 days
Aggregate Intrinsic Value, Outstanding						$ 0		$ 0		$ 0
Aggregate Intrinsic Value, Exercisable						0		0
Restricted Stock
Other disclosures
Compensation expense						37,000	$ 11,000	84,000	$ 44,000
Unrecognized compensation expense						72,000		$ 72,000
Weighted average period of recognition								1 year 6 months
Employee Stock Option
Other disclosures
Compensation expense						48,000	$ 45,000	$ 246,000	$ 158,000
Unrecognized compensation expense						$ 125,000		$ 125,000
Weighted average period of recognition								1 year 1 month 28 days
Employee Stock Option | Employee
Number of Options
Granted (in shares)					365,390
Weighted Average Exercise Price
Granted (in dollars per share)					$ 1.86
Employee Stock Option | Non Management Directors
Number of Options
Granted (in shares)				125,000
Weighted Average Exercise Price
Granted (in dollars per share)				$ 1.93
Other disclosures
Vesting percentage per year				50.00%
Employee Stock Option | Management
Number of Options
Granted (in shares)			20,000
Weighted Average Exercise Price
Granted (in dollars per share)			$ 2.76
Other disclosures
Vesting percentage per year	50.00%	50.00%
Employee Stock Option | Five year expiration
Stockholders' Equity
Expiration period								5 years
Employee Stock Option | Seven year expiration
Stockholders' Equity
Expiration period								7 years
Employee Stock Option | Ten year expiration
Stockholders' Equity
Expiration period								10 years

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