XML 70 R56.htm IDEA: XBRL DOCUMENT
v3.22.4

Leases - Narrative (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022 lease_renewal
Leases [Abstract] |
Number of finance renewals (or more) | 1
Number of operating renewals (or more) | 1
New lease term | 12 years 6 months

X
- Definition Lessee, Finance Lease, Number of Renewals + References No definition available. + Details
Name: | matv_LesseeFinanceLeaseNumberOfRenewals
Namespace Prefix: | matv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, Operating Lease, Number of Renewals + References No definition available. + Details
Name: | matv_LesseeOperatingLeaseNumberOfRenewals
Namespace Prefix: | matv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant