XML 84 R67.htm IDEA: XBRL DOCUMENT
v3.21.2

Restatement of Previously Issued Financial Statements - Additional Information (Detail) - GS Acquisition Holdings Corp II [Member] - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2020
Reclassificatin of temporary equity to permanent number of shares |  | 3,133,926
Issuance costs related to warrant liability | $ 1,075,021 | $ 1,075,021
Public Warrants [Member] |  |
Issuance costs related to warrant liability |  | $ 1,075,021

X
- Definition Offering costs allocated to warrant liability. + References No definition available. + Details
Name: | mir_OfferingCostsAllocatedToWarrantLiability
Namespace Prefix: | mir_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reclassification of temporary equity to permanent number of shares. + References No definition available. + Details
Name: | mir_ReclassificationOfTemporaryEquityToPermanentNumberOfShares
Namespace Prefix: | mir_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=mir_GsAcquisitionHoldingsCorpIiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=mir_PublicWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |