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General (Details)	9 Months Ended
General (Details)	Oct. 29, 2022 segment
General
Number of reporting segment	3

(1) General [Abstract]

No definition available.

Name:	imbi_GeneralAbstract
Namespace Prefix:	imbi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

No definition available.

Name:	us-gaap_NumberOfReportingUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration