XML 109 R98.htm IDEA: XBRL DOCUMENT
v3.8.0.1

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, 2017 | Sep. 30, 2016
--- | --- | ---
Financial instruments - assets |  |
Investment securities held-to-maturity | $ 51,241 | $ 53,849
Fair Value, Inputs, Level 1 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans |  |
Financial instruments - liabilities |  |
Certificate of deposit |  |
Borrowings |  |
Fair Value, Inputs, Level 2 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 51,241 | 53,849
Loans |  |
Financial instruments - liabilities |  |
Certificate of deposit | 128,750 | 135,162
Borrowings | 31,865 | 36,473
Fair Value, Inputs, Level 3 [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity |  |
Loans | 473,538 | 462,868
Financial instruments - liabilities |  |
Certificate of deposit |  |
Borrowings |  |
Fair Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 51,241 | 53,849
Loans | 473,538 | 462,868
Financial instruments - liabilities |  |
Certificate of deposit | 128,750 | 135,162
Borrowings | 31,865 | 36,473
Reported Value [Member] |  |
Financial instruments - assets |  |
Investment securities held-to-maturity | 51,368 | 52,934
Loans | 470,693 | 455,031
Financial instruments - liabilities |  |
Certificate of deposit | 128,028 | 133,979
Borrowings | $ 31,905 | $ 36,040

X
- Definition The fair value of held-to-maturity securities. + References No definition available. + Details
Name: | mgyr_HeldToMaturitySecuritiesFairValueDisclosure
Namespace Prefix: | mgyr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 + 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 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/2003/role/presentationRef -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_EstimateOfFairValueFairValueDisclosureMember
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: |