XML 62 R49.htm IDEA: XBRL DOCUMENT
v3.21.2

Related Party Transactions - Additional Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
May 31, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Restricted Stock Units RSU |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Equity award, granted |  | 103,063 | 190,838 |
MegaChips | Si Time Corporation |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Percentage of outstanding common stock held |  | 31.50% |  | 43.70%
Akira Takata |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Sales consulting services fee | $ 5,000 |  |  |
Akira Takata | Restricted Stock Units RSU |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Equity award, granted | 500 |  |  |
Equity award, vesting date | Nov. 20, 2021 |  |  |

X
- Definition Sales consulting services fee. + References No definition available. + Details
Name: | sitm_SalesConsultingServicesFee
Namespace Prefix: | sitm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award vesting date. + References No definition available. + Details
Name: | sitm_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingDate
Namespace Prefix: | sitm_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=sitm_MegaChipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=sitm_SiTimeCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=sitm_AkiraTakataMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |