XML 13 R50.htm IDEA: XBRL DOCUMENT ﻿
v2.3.0.11

Business Segments and Major Customers (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2011 | Jun. 30, 2010 | Dec. 31, 2010
Business Segments and Major Customers |  |  |  |  |
Number of business groups |  |  |  |  | 2
Financial information of business segments |  |  |  |  |
Revenues | $ 66,214 | $ 38,862 | $ 128,741 | $ 200,726 |
Gain from settlement |  | 10,300 | 6,200 | 106,200 | 126,800
SBG operating income | 52,660 | 38,414 | 108,134 | 285,676 |
Operating income (loss) | (2,508) | (6,673) | 5,862 | 195,493 |
Interest and other expense, net | (5,989) | (3,424) | (11,813) | (9,015) |
Income (loss) before income taxes | (8,497) | (10,097) | (5,951) | 186,478 |
Property, plant and equipment, net | 71,187 |  | 71,187 |  | 67,770
Number of major customers | 3 | 3 | 3 | 1 |
Semiconductor Business Group ("SBG") |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 65,775 | 38,675 | 128,151 | 200,539 |
Gain from settlement |  | 10,300 | 6,200 | 106,200 |
SBG operating income | 56,462 | 40,077 | 114,957 | 288,259 |
Operating income (loss) | 56,462 | 40,077 | 114,957 | 288,259 |
New Business Group ("NBG") |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 439 | 187 | 590 | 187 |
SBG operating income | (3,802) | (1,663) | (6,823) | (2,583) |
Operating income (loss) | (3,802) | (1,663) | (6,823) | (2,583) |
Reconciling items |  |  |  |  |
Financial information of business segments |  |  |  |  |
Operating income (loss) | (55,168) | (45,087) | (102,272) | (90,183) |
Unallocated amounts: Corporate expenses |  |  |  |  |
Financial information of business segments |  |  |  |  |
Operating income (loss) | (30,868) | (27,754) | (60,582) | (54,406) |
Unallocated amounts: Unallocated expenses |  |  |  |  |
Financial information of business segments |  |  |  |  |
Operating income (loss) | (24,300) | (17,333) | (41,690) | (35,777) |
Customer 1 |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenue of major customer as a percentage of total revenue (as a percent) | 38.00% | 38.00% | 34.00% | 76.00% |
Customer 2 |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenue of major customer as a percentage of total revenue (as a percent) | 13.00% | 17.00% | 13.00% |  |
Customer 3 |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenue of major customer as a percentage of total revenue (as a percent) | 12.00% | 10.00% | 12.00% |  |
Japan |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 26,649 | 18,837 | 56,250 | 37,873 |
Korea |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 25,074 | 14,713 | 44,218 | 151,879 |
North America |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 14,469 | 5,292 | 28,096 | 10,777 |
Asia-Other |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 15 | 13 | 163 | 58 |
Europe |  |  |  |  |
Financial information of business segments |  |  |  |  |
Revenues | 7 | 7 | 14 | 139 |
United States |  |  |  |  |
Financial information of business segments |  |  |  |  |
Property, plant and equipment, net | 70,300 |  | 70,300 |  | 66,700
India |  |  |  |  |
Financial information of business segments |  |  |  |  |
Property, plant and equipment, net | 800 |  | 800 |  | 1,000
Other foreign locations |  |  |  |  |
Financial information of business segments |  |  |  |  |
Property, plant and equipment, net | $ 100 |  | $ 100 |  | $ 100

X
- Definition This element represents the net operating interest income (expense) and other expenses, net. + Details
Name: | rmbs_InterestExpenseAndOtherExpenseNet
Namespace Prefix: | rmbs
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of business groups of the entity. + Details
Name: | rmbs_NumberOfBusinessGroups
Namespace Prefix: | rmbs
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of customers with revenues in excess of 10% of total revenues for respective reporting period. + Details
Name: | rmbs_NumberOfMajorCustomersInReportingPeriod
Namespace Prefix: | rmbs
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the revenue of a major customer as a percentage of the total revenue. + Details
Name: | rmbs_RevenueOfMajorCustomerAsPercentageOfTotalRevenue
Namespace Prefix: | rmbs
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total operating income loss for reporting segments. + Details
Name: | rmbs_SegmentOperatingIncomeLoss
Namespace Prefix: | rmbs
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) estimated litigation liability extinguished, in settlement of a litigation matter. Represents (for other than an insurance entity in its normal claims settlement process), the amount of income (expense) recognized in the period to settle pending or threatened litigation and insurance claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 + Details
Name: | us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix: | us-gaap
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 -Article 5 -Section 03 -Paragraph 10 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 8 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: 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 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration