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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance Table
|  |  |  |  |  |  |  |  |  |  |  |  |  | Value of initial fixed $100 Investment(2) |  |  |  |  |  |  |
Year |  | Reported Summary Compensation Table Total for PEO |  |  | Compensation Actually Paid to PEO(5) |  |  | Average Reported Summary Compensation Table Total for Non-PEO NEOs(1) |  |  | Average Compensation Actually Paid to other NEOs(1)(5) |  |  | Company Total Shareholder Return |  |  | Peer Group Total Shareholder Return(3) |  |  | Net Income (in millions) |  |  | PF Op Income (in millions)(4) |
2023 |  | $ | 8,423,593 |  |  | $ | 30,372,331 |  |  | $ | 3,036,107 |  |  | $ | 11,493,108 |  |  | $ | 495.46 |  |  | $ | 277.14 |  |  | $ | 333.9 |  |  | $ | 251.9 |
2022 |  | $ | 7,130,474 |  |  | $ | 19,432,713 |  |  | $ | 3,160,306 |  |  | $ | 5,746,805 |  |  | $ | 260.04 |  |  | $ | 137.05 |  |  | $ | (14.3 | ) |  | $ | 256.2 |
2021 |  | $ | 5,761,497 |  |  | $ | 13,591,885 |  |  | $ | 1,538,175 |  |  | $ | 1,940,042 |  |  | $ | 213.36 |  |  | $ | 219.49 |  |  | $ | 18.3 |  |  | $ | 210.5 |
2020 |  | $ | 5,377,663 |  |  | $ | 6,454,443 |  |  | $ | 2,291,740 |  |  | $ | 2,827,485 |  |  | $ | 126.75 |  |  | $ | 145.23 |  |  | $ | (40.5 | ) |  | $ | 181.8 |
(1) | The NEOs for each applicable year are:
| • |  | 2023: PEO: Luc Seraphin. Other NEOs: Desmond Lynch, Sean Fan, and John Shinn.
| • |  | 2022: PEO: Luc Seraphin. Other NEOs: Desmond Lynch, Sean Fan, John Shinn, and Keith Jones. Mr. Jones resigned from his position as Vice President, Finance, and Interim Chief Financial Officer effective as of August 5, 2022
| • |  | 2021: PEO: Luc Seraphin. Other NEOs: Sean Fan, John Shinn, Keith Jones, Jae Kim, and Rahul Mathur. Mr. Kim resigned from his position as Senior Vice President, General Counsel and Secretary effective as of February 19, 2021. Mr. Mathur resigned from his position of Senior Vice President, Finance and Chief Financial Officer effective as of November 15, 2021
| • |  | 2020: PEO: Luc Seraphin. Other NEOs: Sean Fan, Jae Kim, and Rahul Mathur
(2) | Cumulative TSR is measured as of a base period of December 31, 2019
(3) | The peer group used for relative TSR is the RDG Semiconductor Composite Index, comprising 77 constituent companies, which is the same peer group the Company uses for its Item 201(e) of Regulation S-K disclosure
(4) | The Company-selected measure is pro-forma operating income, as described in our CD&A section of the proxy. Pro-forma operating income is a non-GAAP measure that consists of GAAP operating income, adjusted for stock-based compensation expense, amortization expense, certain acquisition related expenses, retention bonuses, restructuring expenses, impairment charges, non-cash interest expense and certain other one-time or extraordinary expenses or credits and, as described in the CD&A section of the proxy, was also adjusted for Customer Licensing Income.
| Other one-time or extraordinary expense or income items may be excluded from pro-forma operating income as determined by the Compensation and Human Resources Committee.
(5) | The SEC rules require that certain adjustments be made to the Summary Compensation Table totals to determine CAP, as reported in the Pay versus Performance table above. The following table details the applicable adjustments that were made to determine CAP (a djustments for pension or dividend payments are not covered, as Rambus does not have supplemental executive retirement plans and does not pay dividends on equity award s, and d ue to rounding, the calculated final value of the numbers shown in the following table may not be the precise values reported above ):
|  |  |  |  |  |  | Equity Awards |
Year |  | Executives |  | SCT Total |  |  | Deduct SCT Stock & Option Awards |  |  | Add Year-End Value of Unvested Equity Granted in Year |  |  | Add Change in Value of Unvested Awards Granted in Prior Years |  |  | Add Change in Value of Vested Equity Granted in Year |  |  | Add Change in Value of Vested Equity Granted in Prior Years |
2023 |  | PEO |  | $ | 8,423,593 |  |  | $ | 7,190,089 |  |  | $ | 11,012,250 |  |  | $ | 10,245,511 |  |  | $ | 0 |  |  | $ | 7,881,066 |
|  | Other NEOs* |  | $ | 3,036,107 |  |  | $ | 2,308,102 |  |  | $ | 3,526,754 |  |  | $ | 5,965,043 |  |  | $ | 0 |  |  | $ | 1,273,305 |
2022 |  | PEO |  | $ | 7,130,474 |  |  | $ | 5,857,203 |  |  | $ | 8,872,767 |  |  | $ | 3,476,967 |  |  | $ | 0 |  |  | $ | 5,809,709 |
|  | Other NEOs* |  | $ | 3,160,306 |  |  | $ | 2,492,078 |  |  | $ | 4,235,555 |  |  | $ | 430,855 |  |  | $ | 0 |  |  | $ | 412,167 |
2021 |  | PEO |  | $ | 5,761,497 |  |  | $ | 4,511,773 |  |  | $ | 6,755,857 |  |  | $ | 3,551,346 |  |  | $ | 0 |  |  | $ | 2,034,959 |
|  | Other NEOs* |  | $ | 1,538,175 |  |  | $ | 1,055,024 |  |  | $ | 774,181 |  |  | $ | 324,841 |  |  | $ | 0 |  |  | $ | 357,869 |
2020 |  | PEO |  | $ | 5,377,663 |  |  | $ | 4,050,500 |  |  | $ | 4,009,500 |  |  | $ | 1,041,477 |  |  | $ | 0 |  |  | $ | 76,303 |
|  | Other NEOs* |  | $ | 2,291,740 |  |  | $ | 1,369,477 |  |  | $ | 1,377,093 |  |  | $ | 507,449 |  |  | $ | 0 |  |  | $ | 20,680 |
* | Presented on an averaged basis.
Company Selected Measure Name | pro-forma operating income |  |  |
Named Executive Officers, Footnote |
(1) | The NEOs for each applicable year are:
| • |  | 2023: PEO: Luc Seraphin. Other NEOs: Desmond Lynch, Sean Fan, and John Shinn.
| • |  | 2022: PEO: Luc Seraphin. Other NEOs: Desmond Lynch, Sean Fan, John Shinn, and Keith Jones. Mr. Jones resigned from his position as Vice President, Finance, and Interim Chief Financial Officer effective as of August 5, 2022
| • |  | 2021: PEO: Luc Seraphin. Other NEOs: Sean Fan, John Shinn, Keith Jones, Jae Kim, and Rahul Mathur. Mr. Kim resigned from his position as Senior Vice President, General Counsel and Secretary effective as of February 19, 2021. Mr. Mathur resigned from his position of Senior Vice President, Finance and Chief Financial Officer effective as of November 15, 2021
| • |  | 2020: PEO: Luc Seraphin. Other NEOs: Sean Fan, Jae Kim, and Rahul Mathur
Peer Group Issuers, Footnote | The peer group used for relative TSR is the RDG Semiconductor Composite Index, comprising 77 constituent companies, which is the same peer group the Company uses for its Item 201(e) of Regulation S-K disclosure |  |  |
PEO Total Compensation Amount | $ 8,423,593 | $ 7,130,474 | $ 5,761,497 | $ 5,377,663
PEO Actually Paid Compensation Amount | $ 30,372,331 | 19,432,713 | 13,591,885 | 6,454,443
Adjustment To PEO Compensation, Footnote |
(5) | The SEC rules require that certain adjustments be made to the Summary Compensation Table totals to determine CAP, as reported in the Pay versus Performance table above. The following table details the applicable adjustments that were made to determine CAP (a djustments for pension or dividend payments are not covered, as Rambus does not have supplemental executive retirement plans and does not pay dividends on equity award s, and d ue to rounding, the calculated final value of the numbers shown in the following table may not be the precise values reported above ):
|  |  |  |  |  |  | Equity Awards |
Year |  | Executives |  | SCT Total |  |  | Deduct SCT Stock & Option Awards |  |  | Add Year-End Value of Unvested Equity Granted in Year |  |  | Add Change in Value of Unvested Awards Granted in Prior Years |  |  | Add Change in Value of Vested Equity Granted in Year |  |  | Add Change in Value of Vested Equity Granted in Prior Years |
2023 |  | PEO |  | $ | 8,423,593 |  |  | $ | 7,190,089 |  |  | $ | 11,012,250 |  |  | $ | 10,245,511 |  |  | $ | 0 |  |  | $ | 7,881,066 |
|  | Other NEOs* |  | $ | 3,036,107 |  |  | $ | 2,308,102 |  |  | $ | 3,526,754 |  |  | $ | 5,965,043 |  |  | $ | 0 |  |  | $ | 1,273,305 |
2022 |  | PEO |  | $ | 7,130,474 |  |  | $ | 5,857,203 |  |  | $ | 8,872,767 |  |  | $ | 3,476,967 |  |  | $ | 0 |  |  | $ | 5,809,709 |
|  | Other NEOs* |  | $ | 3,160,306 |  |  | $ | 2,492,078 |  |  | $ | 4,235,555 |  |  | $ | 430,855 |  |  | $ | 0 |  |  | $ | 412,167 |
2021 |  | PEO |  | $ | 5,761,497 |  |  | $ | 4,511,773 |  |  | $ | 6,755,857 |  |  | $ | 3,551,346 |  |  | $ | 0 |  |  | $ | 2,034,959 |
|  | Other NEOs* |  | $ | 1,538,175 |  |  | $ | 1,055,024 |  |  | $ | 774,181 |  |  | $ | 324,841 |  |  | $ | 0 |  |  | $ | 357,869 |
2020 |  | PEO |  | $ | 5,377,663 |  |  | $ | 4,050,500 |  |  | $ | 4,009,500 |  |  | $ | 1,041,477 |  |  | $ | 0 |  |  | $ | 76,303 |
|  | Other NEOs* |  | $ | 2,291,740 |  |  | $ | 1,369,477 |  |  | $ | 1,377,093 |  |  | $ | 507,449 |  |  | $ | 0 |  |  | $ | 20,680 |
* | Presented on an averaged basis.
Non-PEO NEO Average Total Compensation Amount | $ 3,036,107 | 3,160,306 | 1,538,175 | 2,291,740
Non-PEO NEO Average Compensation Actually Paid Amount | $ 11,493,108 | 5,746,805 | 1,940,042 | 2,827,485
Adjustment to Non-PEO NEO Compensation Footnote |
(5) | The SEC rules require that certain adjustments be made to the Summary Compensation Table totals to determine CAP, as reported in the Pay versus Performance table above. The following table details the applicable adjustments that were made to determine CAP (a djustments for pension or dividend payments are not covered, as Rambus does not have supplemental executive retirement plans and does not pay dividends on equity award s, and d ue to rounding, the calculated final value of the numbers shown in the following table may not be the precise values reported above ):
|  |  |  |  |  |  | Equity Awards |
Year |  | Executives |  | SCT Total |  |  | Deduct SCT Stock & Option Awards |  |  | Add Year-End Value of Unvested Equity Granted in Year |  |  | Add Change in Value of Unvested Awards Granted in Prior Years |  |  | Add Change in Value of Vested Equity Granted in Year |  |  | Add Change in Value of Vested Equity Granted in Prior Years |
2023 |  | PEO |  | $ | 8,423,593 |  |  | $ | 7,190,089 |  |  | $ | 11,012,250 |  |  | $ | 10,245,511 |  |  | $ | 0 |  |  | $ | 7,881,066 |
|  | Other NEOs* |  | $ | 3,036,107 |  |  | $ | 2,308,102 |  |  | $ | 3,526,754 |  |  | $ | 5,965,043 |  |  | $ | 0 |  |  | $ | 1,273,305 |
2022 |  | PEO |  | $ | 7,130,474 |  |  | $ | 5,857,203 |  |  | $ | 8,872,767 |  |  | $ | 3,476,967 |  |  | $ | 0 |  |  | $ | 5,809,709 |
|  | Other NEOs* |  | $ | 3,160,306 |  |  | $ | 2,492,078 |  |  | $ | 4,235,555 |  |  | $ | 430,855 |  |  | $ | 0 |  |  | $ | 412,167 |
2021 |  | PEO |  | $ | 5,761,497 |  |  | $ | 4,511,773 |  |  | $ | 6,755,857 |  |  | $ | 3,551,346 |  |  | $ | 0 |  |  | $ | 2,034,959 |
|  | Other NEOs* |  | $ | 1,538,175 |  |  | $ | 1,055,024 |  |  | $ | 774,181 |  |  | $ | 324,841 |  |  | $ | 0 |  |  | $ | 357,869 |
2020 |  | PEO |  | $ | 5,377,663 |  |  | $ | 4,050,500 |  |  | $ | 4,009,500 |  |  | $ | 1,041,477 |  |  | $ | 0 |  |  | $ | 76,303 |
|  | Other NEOs* |  | $ | 2,291,740 |  |  | $ | 1,369,477 |  |  | $ | 1,377,093 |  |  | $ | 507,449 |  |  | $ | 0 |  |  | $ | 20,680 |
* | Presented on an averaged basis.
Compensation Actually Paid vs. Total Shareholder Return |  |  |  |
Compensation Actually Paid vs. Net Income |  |  |  |
Compensation Actually Paid vs. Company Selected Measure |  |  |  |
Total Shareholder Return Vs Peer Group |  |  |  |
Tabular List, Table | Tabular List of Performance Measures
Pro-forma Operating Income
Relative TSR
Product Revenue
Total Shareholder Return Amount | $ 495.46 | 260.04 | 213.36 | 126.75
Peer Group Total Shareholder Return Amount | 277.14 | 137.05 | 219.49 | 145.23
Net Income (Loss) | $ 333,900,000 | $ (14,300,000) | $ 18,300,000 | $ (40,500,000)
Company Selected Measure Amount | 251,900,000 | 256,200,000 | 210,500,000 | 181,800,000
PEO Name | Luc Seraphin | Luc Seraphin | Luc Seraphin | Luc Seraphin
Measure:: 1 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Pro-forma Operating Income |  |  |
Non-GAAP Measure Description |
(4) | The Company-selected measure is pro-forma operating income, as described in our CD&A section of the proxy. Pro-forma operating income is a non-GAAP measure that consists of GAAP operating income, adjusted for stock-based compensation expense, amortization expense, certain acquisition related expenses, retention bonuses, restructuring expenses, impairment charges, non-cash interest expense and certain other one-time or extraordinary expenses or credits and, as described in the CD&A section of the proxy, was also adjusted for Customer Licensing Income.
Measure:: 2 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Relative TSR |  |  |
Measure:: 3 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Product Revenue |  |  |
PEO | SCT Stock & Option Awards [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 7,190,089 | $ 5,857,203 | $ 4,511,773 | $ 4,050,500
PEO | Add Year-End Value of Unvested Equity Granted in Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 11,012,250 | 8,872,767 | 6,755,857 | 4,009,500
PEO | Add Change in Value of Unvested Awards Granted in Prior Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 10,245,511 | 3,476,967 | 3,551,346 | 1,041,477
PEO | Add Change in Value of Vested Equity Granted in Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 0 | 0 | 0 | 0
PEO | Add Change in Value of Vested Equity Granted in Prior Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 7,881,066 | 5,809,709 | 2,034,959 | 76,303
Non-PEO NEO | SCT Stock & Option Awards [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 2,308,102 | 2,492,078 | 1,055,024 | 1,369,477
Non-PEO NEO | Add Year-End Value of Unvested Equity Granted in Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 3,526,754 | 4,235,555 | 774,181 | 1,377,093
Non-PEO NEO | Add Change in Value of Unvested Awards Granted in Prior Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 5,965,043 | 430,855 | 324,841 | 507,449
Non-PEO NEO | Add Change in Value of Vested Equity Granted in Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 0 | 0 | 0 | 0
Non-PEO NEO | Add Change in Value of Vested Equity Granted in Prior Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 1,273,305 | $ 412,167 | $ 357,869 | $ 20,680

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