XML 89 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Segments and Major Customers (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Financial information of business segments |  |  |  |
Revenues | $ 57,919 | $ 56,215 | $ 124,785 | $ 119,078
Other patent royalties received | 3,392 | 1,201 | 8,629 | 3,615
Customer licensing income | 61,311 | 57,416 | 133,414 | 122,693
Segment operating expenses | 28,636 | 26,026 | 55,493 | 52,150
Segment operating income (loss) | 32,675 | 31,390 | 77,921 | 70,543
Operating income (loss) | 5,744 | (21,749) | 7,185 | (39,307)
Interest and other income (expense), net | (8,845) | (6,630) | (16,177) | (13,112)
Loss before income taxes | (3,101) | (28,379) | (8,992) | (52,419)
MID Segment |  |  |  |
Financial information of business segments |  |  |  |
Revenues | 49,456 | 52,137 | 109,131 | 109,225
Other patent royalties received | 3,125 | 0 | 5,000 | 0
Customer licensing income | 52,581 | 52,137 | 114,131 | 109,225
Segment operating expenses | 9,347 | 10,045 | 18,272 | 21,594
Segment operating income (loss) | 43,234 | 42,092 | 95,859 | 87,631
CTO Segment |  |  |  |
Financial information of business segments |  |  |  |
Revenues | 0 | 0 | 0 | 0
Other patent royalties received | 0 | 0 | 0 | 0
Customer licensing income | 0 | 0 | 0 | 0
Segment operating expenses | 7,074 | 7,864 | 14,932 | 14,368
Segment operating income (loss) | (7,074) | (7,864) | (14,932) | (14,368)
All Other |  |  |  |
Financial information of business segments |  |  |  |
Revenues | 8,463 | 4,078 | 15,654 | 9,853
Other patent royalties received | 267 | 1,201 | 3,629 | 3,615
Customer licensing income | 8,730 | 5,279 | 19,283 | 13,468
Segment operating expenses | 12,215 | 8,117 | 22,289 | 16,188
Segment operating income (loss) | (3,485) | (2,838) | (3,006) | (2,720)
Reconciling Items |  |  |  |
Financial information of business segments |  |  |  |
Operating income (loss) | $ (26,931) | $ (53,139) | $ (70,736) | $ (109,850)

X
- Definition Customer Licensing Income + References No definition available. + Details
Name: | rmbs_CustomerLicensingIncome
Namespace Prefix: | rmbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Operating Expenses, Segment + References No definition available. + Details
Name: | rmbs_OperatingExpensesSegment
Namespace Prefix: | rmbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other non-Revenue Patent Royalties Received + References No definition available. + Details
Name: | rmbs_OtherNonRevenuePatentRoyaltiesReceived
Namespace Prefix: | rmbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total operating income loss for reporting segments. + References No definition available. + Details
Name: | rmbs_SegmentOperatingIncomeLoss
Namespace Prefix: | rmbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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