XML 74 R57.htm IDEA: XBRL DOCUMENT
v3.19.1

Taxes on Income (Details Textual) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 13, 2013 | Dec. 22, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 23.00% | 24.00% | 25.00%
Tax loss carry forward |  |  | $ 31,234 |  |
Capital loss |  |  | 716 |  |
Net change in total valuation allowance |  |  | $ 20 |  |
Tax credit carryforward, description | The tax rate on preferred income from a preferred enterprise in 2014-2016 will be 9% in certain areas in Israel ("Development Area A") and 16% in other areas. In 2017, the tax rate at Development Area A was reduced to 7.5%. |  |  |  |
Subject to tax at a rate |  |  | 4.00% |  |
Companies foreign currency exchange rate |  |  | 90.00% |  |
U.S. subsidiary [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 21.00% |  |
Tax loss carry forward |  |  | $ 7,682 |  |
Tax credit carryforward, description |  | U.S. federal corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017. | Such losses are available to offset any future U.S. taxable income of the U.S. subsidiary and will expire in the years 2019-2026 for federal tax purposes. |  |
Brazilian subsidiary [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 34.00% |  |
Tax loss carry forward |  |  | $ 3,336 |  |
Maximum offset percentage of taxable income for tax period |  |  | 30.00% |  |
Indian subsidiary [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 25.00% |  |
Research and Development Expense [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Tax loss carry forward |  |  | $ 8,837 |  |
Development area A [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 7.50% |  |
Other areas [Member] |  |  |  |  |
Taxes on Income (Textual) |  |  |  |  |
Income tax rate |  |  | 12.00% |  |

X
- Definition Amount of capital loss. + References No definition available. + Details
Name: | rdcm_CapitalLoss
Namespace Prefix: | rdcm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of foreign currency exchange rate. + References No definition available. + Details
Name: | rdcm_ForeignCurrencyExchangeRate
Namespace Prefix: | rdcm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents information pertaining to maximum offset percentage of taxable income for a tax period. + References No definition available. + Details
Name: | rdcm_MaximumOffsetPercentageOfTaxableIncomeForTaxPeriod
Namespace Prefix: | rdcm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition A description of the origin, nature, and characteristics of the tax credit carryforward. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_TaxCreditCarryforwardDescription
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=rdcm_USSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=rdcm_IndianSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=rdcm_DevelopmentAreaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=rdcm_OtherJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |