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RELATED PARTY BALANCES AND TRANSACTIONS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Rent And Maintenance [Member]
Related Party Transaction [Line Items]
Expenses	$ 894	$ 2,099	$ 1,936
Purchase Of Property And Equpment [Member]
Related Party Transaction [Line Items]
Expenses	175	274	46
Rad Bynet [Member]
Related Party Transaction [Line Items]
Reimbursements for services provided	2,677	1,801	2,242
Rad Bynet [Member] | Inventories [Member]
Related Party Transaction [Line Items]
Expenses	305	83	152
Rad Bynet [Member] | Purchase Of Property And Equpment [Member]
Related Party Transaction [Line Items]
Expenses	$ 175	$ 274	$ 46

X

- Definition

Related Party Transaction, reimbursements for services provided

+ References

No definition available.

+ Details

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Namespace Prefix:	crnt_
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Balance Type:	credit
Period Type:	duration

X

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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- 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.

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- Details

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- Details

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- Details

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- Details

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