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Significant Accounting Policies (Schedule Of Annual Depreciation Rates) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Computers, Manufacturing And Peripheral Equipment [Member] | Minimum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Depreciation rate | 6.00%crnt_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Computers, Manufacturing And Peripheral Equipment [Member] | Maximum [Member] |  |
Significant Accounting Policies [Line Items] |  |
Depreciation rate | 33.00%crnt_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Enterprise Resource Planning Systems ("ERP") [Member] |  |
Significant Accounting Policies [Line Items] |  |
Depreciation rate | 10.00%crnt_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = crnt_EnterpriseResourcePlanningSystemsMember |
Amortization | $ 990 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = crnt_EnterpriseResourcePlanningSystemsMember | $ 394 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = crnt_EnterpriseResourcePlanningSystemsMember
Other Furniture And Equipment [Member] |  |
Significant Accounting Policies [Line Items] |  |
Depreciation rate | 15.00%crnt_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_OtherMachineryAndEquipmentMember |

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- Definition Depreciation rate + References No definition available. + Details
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- Details
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- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Details
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- Details
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