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Leases - Additional Information (Detail) | 12 Months Ended
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Dec. 27, 2024 USD ($)
Leases [Abstract] |
Number of operating lease executed | 0

X
- Definition Number of operating lease executed. + References No definition available. + Details
Name: | ichr_NumberOfOperatingLeaseExecuted
Namespace Prefix: | ichr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration