XML 51 R35.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Segment Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Concentration risk |
Revenue from external customer by geographic regions | Revenue from customers in the geographic regions based on the location of contracting parties was as follows:
|  | Years Ended December 31,
(In thousands) |  | 2021 |  | 2020 |  | 2019
USA |  | $ | 211,419 |  |  | $ | 137,614 |  |  | $ | 134,526 |
Singapore |  | 39,798 |  |  | 28,034 |  |  | 21,751 |
Asia-Other |  | 28,949 |  |  | 26,249 |  |  | 14,356 |
Taiwan |  | 23,953 |  |  | 21,803 |  |  | 24,118 |
Japan |  | 14,894 |  |  | 20,437 |  |  | 15,453 |
South Korea |  | 6,007 |  |  | 3,664 |  |  | 3,583 |
Europe |  | 3,165 |  |  | 7,359 |  |  | 10,262 |
Canada |  | 119 |  |  | 1,162 |  |  | 3,554 |
Total |  | $ | 328,304 |  |  | $ | 246,322 |  |  | $ | 227,603 |
Accounts receivable |
Concentration risk |
Schedule of customer accounts representing 10% or more than 10% of total balance | Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable at December 31, 2021 and 2020, respectively, was as follows:
|  | As of December 31,
Customer |  | 2021 |  | 2020
Customer 1 |  | 19 | % |  | 13 | %
Customer 2 |  | 17 | % |  | *
Customer 3 |  | * |  | 14 | %
Customer 4 |  | * |  | 11 | %
_________________________________________ * Customer accounted for less than 10% of total accounts receivable in the period.
Revenue |
Concentration risk |
Schedule of customer accounts representing 10% or more than 10% of total balance | Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2021, 2020 and 2019, respectively, was as follows:
|  | Years Ended December 31,
Customer |  | 2021 |  | 2020 |  | 2019
Customer A |  | 21 | % |  | 12 | % |  | *
Customer B |  | 13 | % |  | * |  | *
Customer C |  | 11 | % |  | 15 | % |  | 10 | %
Customer D |  | * |  | * |  | 14 | %
_________________________________________ * Customer accounted for less than 10% of total revenue in the period.

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 Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
Name: | us-gaap_ScheduleOfRevenueFromExternalCustomersAttributedToForeignCountriesByGeographicAreaTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6327-108592 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6442-108592 + Details
Name: | us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
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: |