Debt Instrument, Covenant Compliance, Minimum Unrestricted Cash Requirement

No definition available.

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Namespace Prefix:	imbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Discloses the expected amount of annualized savings resulting from restructuring activities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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- Details

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Credit Agreements - Cash Requirements (Details) - USD ($)							3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 11, 2020	Jun. 13, 2020	Jun. 01, 2020	May 23, 2020	Apr. 16, 2020	May 02, 2019	May 02, 2020	Aug. 01, 2020	Jan. 30, 2021	Feb. 01, 2020
Debt Instrument [Line Items]
Proceeds from Issuance of Private Placement						$ 6,000,000
PNC Bank, N.A. [Member]
Debt Instrument [Line Items]
Debt instrument covenant compliance, minimum unrestricted cash plus facility requirement										$ 10,000,000
Subsequent Event [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Private Placement					$ 1,500,000		$ 4,000,000	$ 4,000,000
Subsequent Event [Member] \| Forecast [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Private Placement	$ 1,000,000	$ 500,000	$ 500,000	$ 500,000
Fiscal 2019 Restructuring Plans [Member] \| Forecast [Member]
Debt Instrument [Line Items]
Restructuring and Related Cost, Expected Annualized Savings									$ 22,000,000
Q1 Fiscal 2020 Restructuring Plans [Member] \| Subsequent Event [Member] \| Forecast [Member]
Debt Instrument [Line Items]
Restructuring and Related Cost, Expected Annualized Savings									$ 16,000,000