XML 28 R7.htm IDEA: XBRL DOCUMENT
v3.20.4

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 17, 2017
--- | --- | --- | --- | ---
Convertible senior notes | 1.375% convertible notes due 2023 |  |  |  |
Stated Interest rate (as a percent) | 1.375% | 1.375% | 1.375% | 1.375%

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=rmbs_ConvertibleSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=rmbs_SeniorOnePointThreeSevenFivePercentConvertibleNotesDueTwoThousandTwentyThreeMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |