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GENERAL (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Bank guarantees	$ 79,923	$ 34,988
On behalf of Orocom [Member]
Bank guarantees	$ 29,100

X

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248

+ Details

Name:	us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=crnt_OnBehalfOfOrocomMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: