XML 53 R42.htm IDEA: XBRL DOCUMENT v3.25.0.1

FAIR VALUE DISCLOSURES - Schedule of the Carrying Amount, Fair Value, and Placement in the Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024
Fair Value, Inputs, Level 1 [Member]
Financial instruments - assets
Investment securities held-to-maturity
Loan receivable net allowance for credit losses
Financial instruments - liabilities
Certificates of deposit including retirement certificates
Borrowings
Fair Value, Inputs, Level 2 [Member]
Financial instruments - assets
Investment securities held-to-maturity	71,812	72,617
Loan receivable net allowance for credit losses
Financial instruments - liabilities
Certificates of deposit including retirement certificates	161,244	159,582
Borrowings	29,430	28,151
Fair Value, Inputs, Level 3 [Member]
Financial instruments - assets
Investment securities held-to-maturity
Loan receivable net allowance for credit losses	790,574	766,822
Financial instruments - liabilities
Certificates of deposit including retirement certificates
Borrowings
Carrying Value [Member]
Financial instruments - assets
Investment securities held-to-maturity	80,644	79,816
Loan receivable net allowance for credit losses	797,629	772,614
Financial instruments - liabilities
Certificates of deposit including retirement certificates	161,938	159,652
Borrowings	30,424	28,568
Fair Value [Member]
Financial instruments - assets
Investment securities held-to-maturity	71,812	72,617
Loan receivable net allowance for credit losses	790,574	766,822
Financial instruments - liabilities
Certificates of deposit including retirement certificates	161,244	159,582
Borrowings	$ 29,430	$ 28,151

X

- Definition

Certificates of deposit including retirement certificates.

+ References

No definition available.

+ Details

Name:	mgyr_CertificatesOfDepositIncludingRetirementCertificates
Namespace Prefix:	mgyr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

- Definition

Amount of debt and lease obligation, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(21))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_DebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_OtherAssetsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_OtherLiabilitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: