XML 44 R93.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

FAIR VALUE DISCLOSURES (Schedule of the Carrying Amount, Fair Value, and Placement in the Fair Value Hierarchy of Financial Instruments) (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Sep. 30, 2018
--- | --- | ---
Financial instruments - assets |  |
Investment securities held-to-maturity | $ 29,481 | $ 33,645
Fair Value, Inputs, Level 1 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit |  |
Borrowings |  |
Fair Value, Inputs, Level 2 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 29,344 | 32,151
Loans |  |
Financial instruments - liabilities |  |
Certificates of deposit | 117,730 | 130,813
Borrowings | 36,583 | 34,863
Fair Value, Inputs, Level 3 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans | 527,088 | 505,479
Financial instruments - liabilities |  |
Certificates of deposit |  |
Borrowings |  |
Reported Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 29,481 | 33,645
Loans | 518,217 | 508,430
Financial instruments - liabilities |  |
Certificates of deposit | 116,776 | 130,343
Borrowings | 36,189 | 35,524
Fair Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 29,344 | 32,151
Loans | 527,088 | 505,479
Financial instruments - liabilities |  |
Certificates of deposit | 117,730 | 130,813
Borrowings | $ 36,583 | $ 34,863

X
- Definition Amount of interest-bearing domestic certificate of deposit liabilities. + References No definition available. + Details
Name: | mgyr_InterestBearingDomesticDepositCertificatesOfDepositsFairValueDisclosure
Namespace Prefix: | mgyr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Definition Amount, before other-than-temporary impairment (OTTI) accretion, of investment in debt securities measured at amortized cost (held-to-maturity). + References No definition available. + Details
Name: | us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: |