XML 56 R43.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Stockholders' Equity (Details) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 10, 2010 item $ / shares shares | Mar. 31, 2015 USD ($) item shares | Jun. 30, 2013 USD ($) shares | Dec. 31, 2015 USD ($) | Dec. 31, 2013 USD ($)
Stockholders' Equity |  |  |  |  |
Number of shares of common stock issued in equity and public offering |  | 14,375,000 | 7,500,000 |  |
Net proceeds from issue of shares of common stock in equity and public offering | $ |  | $ 21,400 | $ 27,700 | $ 21,368 | $ 27,746
Number of executive officers | item |  | 2 |  |  |
Shares purchased by executive officers |  | 406,250 |  |  |
Number of shares issued to MoSys' chief executive officer |  |  | 250,000 |  |
Stockholder Rights Plan |  |  |  |  |
Number of preferred share purchase rights declared as dividend for each outstanding share of common stock | item | 1 |  |  |  |
Number of shares of Series AA Preferred Stock that a registered holder of right is entitled to purchase | 0.001 |  |  |  |
Exercise price (in dollars per one-thousandth of a share) | $ / shares | $ 48.00 |  |  |  |
Percentage of the company's common stock acquired by a third party upon which the rights become exercisable | 15.00% |  |  |  |
Minimum percentage of the company's common stock that must receive a tender offer from a third party upon which the rights become exercisable | 15.00% |  |  |  |
Beneficial ownership threshold for a holder of grandfathered stock (as a percent) | 20.00% |  |  |  |
Beneficial ownership threshold for a holder of grandfathered stock after amendment (as a percent) | 15.00% |  |  |  |

X
- Definition Represents the percentage of the entity's common stock to be considered as beneficial ownership threshold for a holder of grandfathered stock. + References No definition available. + Details
Name: | mosy_CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentage
Namespace Prefix: | mosy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the entity's common stock to be considered as beneficial ownership threshold for a holder of grandfathered stock after amendment. + References No definition available. + Details
Name: | mosy_CommonStockBeneficialOwnershipThresholdForHolderOfGrandfatheredStockPercentageAfterAmendment
Namespace Prefix: | mosy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of executive officers of the entity who are investors of the related party. + References No definition available. + Details
Name: | mosy_NumberOfExecutiveOfficersWhoAreInvestorsInRelatedParty
Namespace Prefix: | mosy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents information pertaining to the number of shares purchased by MoSys' chief executive officer at the public offering price. + References No definition available. + Details
Name: | mosy_NumberOfSharesIssuedToMoSysChiefExecutiveOfficer
Namespace Prefix: | mosy_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimum percentage of the entity's common stock that must receive a tender offer to purchase by a third party upon which the rights become exercisable. + References No definition available. + Details
Name: | mosy_PreferredSharePurchaseRightsMinimumPercentageOwnershipOfferToPurchaseCommonStock
Namespace Prefix: | mosy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the entity's common stock acquired by a third party upon which the rights become exercisable. + References No definition available. + Details
Name: | mosy_PreferredSharePurchaseRightsPercentageOwnershipOfOutstandingCommonStockForExercise
Namespace Prefix: | mosy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares of preferred stock that the holder of each preferred share purchase right is entitled to purchase, if the rights become exercisable. + References No definition available. + Details
Name: | mosy_PreferredSharePurchaseRightsSharesPerRight
Namespace Prefix: | mosy_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of preferred share purchase rights declared as dividend for each outstanding share of common stock. + References No definition available. + Details
Name: | mosy_PreferredStockDividendsNumberOfPreferredSharePurchaseRightsDistributedForEachShareOfCommonStockOutstanding
Namespace Prefix: | mosy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | mosy_ShareholdersRightsPlanAbstract
Namespace Prefix: | mosy_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration