XML 36 R25.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Revenue from Contracts with Customers (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Revenue Recognition from Contracts with Customers [Abstract] |
Contract with Customer, Asset and Liability [Table Text Block] | The Company’s contract balances were as follows:
| As of
(In thousands) | March 31, 2018 |  | January 1, 2018
Unbilled receivables | $ | 771,002 |  |  | $ | 818,371 |
Deferred revenue | 16,985 |  |  | 20,737 |

X
- Definition Revenue Recognition from Contracts with Customers [Abstract] + References No definition available. + Details
Name: | rmbs_RevenueRecognitionfromContractswithCustomersAbstract
Namespace Prefix: | rmbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130551-203045 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration