Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details)								3 Months Ended				12 Months Ended
	Sep. 20, 2022 USD ($)	Sep. 29, 2021 USD ($)	Jan. 04, 2021 shares	Jan. 04, 2021 shares	Jul. 15, 2020 Store	Jun. 08, 2020 Store	Mar. 25, 2020 Store	Dec. 31, 2020 Director	Sep. 30, 2020 Store	Jun. 30, 2020 USD ($) Store State	Jun. 30, 2020 USD ($) Store State	Jul. 02, 2022 USD ($) State Store shares	Jun. 30, 2021 USD ($) State Store shares	Jun. 30, 2020 USD ($) Store State	Jun. 26, 2022 $ / shares	May 09, 2022 USD ($)	Sep. 30, 2021	Jul. 01, 2019 USD ($)	Jun. 30, 2019 USD ($)
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of discount retail stores operated | Store										685	685	489	490	685
Number of states in which the entity operates | State										39	39	40	40	39
Minimum bid price requirement | $ / shares															$ 1.00
Conversion of Stock, description												the Company will have a compliance period of 180 calendar days, or until December 5, 2022, to regain compliance with the Minimum Bid Price Requirement. To regain compliance, during the 180-calendar day compliance period, the closing bid price of the Company’s common stock must meet or exceed $1.00 per share for a minimum of ten consecutive business days.
Number of stores temporarily closed | Store							687
Number of stores reopened | Store										685	685			685
Number of stores permanently closed | Store									197	2
Percentage of gross margin												25.60%	29.80%
Additional financing amount												$ 35,000,000
Petition date												May 27, 2020
Number of store locations in process to close | Store						132
Number of stores expect to close | Store					65
Maximum amounts reserved and retained in unsecured creditor claim fund		$ 14,000,000
Remaining escrow account		$ 14,000,000
Credit card receivables from third party consumer credit card providers												$ 6,300,000	$ 3,200,000
Restricted cash												0	22,321,000
Capitalized inventory costs expensed in cost of sales												112,200,000	95,100,000	$ 97,800,000
Capitalized cost in inventory												29,000,000.0	24,200,000
Current and non-current qualified deferred payroll taxes CARES Act												2,600,000
Impairment charges											$ 80,100,000	1,963,000	1,639,000	80,076,000
Gift card liability												1,095,000	1,045,000
Advertising expenses												$ 6,600,000	$ 8,300,000	18,600,000
Stock options granted | shares												0	0
Impairment of intangible assets													$ 1,639,000
Asset retirement obligations												$ 1,100,000	1,000,000.0
Existence of option to renew												true
Cumulative effect adjustment to retained earnings										$ 6,935,000	$ 6,935,000	$ 18,987,000	71,801,000	6,935,000					$ 171,309,000
Reduction of operating lease right-of-use assets upon remeasurements and termination of rejected leases												31,000,000.0
Reduction of operating lease liabilities upon remeasurements and termination of rejected leases												124,000,000.0
Gain on terminations of rejected leases													93,278,000
Number of stores impaired | Store											200
Gain on lease liabilities of estimated claims												66,000,000	66,247,000
New ABL Credit Agreement
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Line Of credit facility borrowing capacity																$ 7,500,000
New ABL Credit Agreement | Subsequent Event [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Issuance of convertible debt Securities	$ 35,000,000
Proceeds of the private placement repay	7,500,000
Payment of transaction costs	$ 5,000,000
First-In Last-Out Term Loan B Facility [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Line Of credit facility borrowing capacity												5,000,000
Cumulative Effect Period of Adoption Adjustment
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Cumulative effect adjustment to retained earnings																			(601,000)
Retained Earnings
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Cumulative effect adjustment to retained earnings										$ (230,729,000)	$ (230,729,000)	$ (286,750,000)	(227,747,000)	(230,729,000)					(63,800,000)
Retained Earnings | Cumulative Effect Period of Adoption Adjustment
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Cumulative effect adjustment to retained earnings																			$ (601,000)
Distribution Center and Retail Store Location | Minimum
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Operating lease term of contract												1 year
Distribution Center and Retail Store Location | Maximum
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Operating lease term of contract												10 years
Equipment | Maximum
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Finance lease term of contract												5 years
Intellectual Property
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Impairment of intangible assets													1,600,000
Accounting Standards Update 2014-09
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Impairment charges												$ 0
Accounting Standards Update 2014-09 | Breakage
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Breakage income recognized												$ 700,000	400,000	800,000
ASU 2016-02
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date												Jul. 01, 2019
ASU 2016-02 | Retained Earnings | Cumulative Effect Period of Adoption Adjustment
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Cumulative effect adjustment to retained earnings																		$ 600,000
ASU 2019-12
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]																	true
Change in accounting principle, accounting standards update, immaterial effect [true false]																	true
ASU 2021-04
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]																	true
Change in accounting principle, accounting standards update, immaterial effect [true false]																	true
Accrued Liabilities | Accounting Standards Update 2014-09
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Gift card liability												$ 1,100,000	1,000,000.0
Worker's compensation
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Stop loss limits per claim												500,000
Self insurance reserve												6,900,000	7,300,000
Insurance expenses recognized												2,300,000	1,400,000	2,700,000
General liability
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Stop loss limits per claim												250,000
Self insurance reserve												600,000	1,200,000
Insurance expenses recognized												3,400,000	3,700,000	3,300,000
Medical liabilities
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Stop loss limits per claim												150,000
Self insurance reserve												1,000,000.0	1,000,000.0
Insurance expenses recognized												$ 7,000,000.0	$ 7,800,000	$ 8,700,000
Backstop Commitment Agreement
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of directors | Director								9
Number of continuing directors | Director								5
Backstop Commitment Agreement | Osmium Partners LLC
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of new shares exchanged for business close | shares			1	1
Backstop Commitment Agreement | Backstop Party
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of new directors appointed | Director								3
Backstop Commitment Agreement | Equity Committee
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of new directors appointed | Director								1