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Property and Equipment and Other Noncurrent Assets - Summary of Capitalized Cloud Computing Implementation Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Capitalized cloud computing implementation cost	$ 11.4		$ 11.6
Capitalized costs amortized during the period	$ (0.2)	$ (0.2)

X

- Definition

Capitalized cloud computing implementation cost.

+ References

No definition available.

+ Details

Name:	ichr_CapitalizedCloudComputingImplementationCost
Namespace Prefix:	ichr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for capitalized implementation cost from hosting arrangement that is service contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 40
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=118198657&loc=SL118198666-228104

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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