XML 79 R54.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Description of Business (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Aug. 01, 2022
Description of Business [Line Items]
Company incorporated date	Jul. 10, 2023
Galata Acquisition Corp [Member]
Description of Business [Line Items]
Callaway capital		$ 146.6

X

- Definition

Date when an entity was incorporated

+ References

No definition available.

+ Details

Name:	dei_EntityIncorporationDateOfIncorporation
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	mrt_DescriptionofBusinessDetailsLineItems
Namespace Prefix:	mrt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

+ Details

Name:	us-gaap_AssetsHeldInTrust
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	dei_LegalEntityAxis=mrt_GalataAcquisitionCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: