XML 55 R44.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Segments and Major Customers (Details 2) - Customer Concentration Risk - Sales, net | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Customer A |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue |  | 17.00% |  | 17.00%
Customer B |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue |  | 13.00% |  | 13.00%
Customer C |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue |  | 14.00% |  | 14.00%
Customer D |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue |  |  | 15.00% |
Customer E |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue | 28.00% |  | 16.00% |
Customer F |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue | 15.00% |  |  |
Customer G |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Revenue from major customer as a percentage of total revenue | 11.00% |  |  |

X
- 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. + Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=rmbs_SalesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomeraMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerFMemberDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=rmbs_CustomerGMemberDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |