XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.7.0.1

FAIR VALUE DISCLOSURES (Schedule of Assets Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Sep. 30, 2016
--- | --- | ---
Fair value measured on recurring basis: |  |
Securities available for sale | $ 10,243 | $ 5,234
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 7,739 | 5,127
Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 2,439 |
Private label mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 65 | 107
Fair Value, Measurements, Recurring [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 10,243 | 5,234
Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 7,739 | 5,127
Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 2,439 |
Fair Value, Measurements, Recurring [Member] | Private label mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 65 | 107
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Private label mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 10,243 | 5,234
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 7,739 | 5,127
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 2,439 |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Private label mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale | 65 | 107
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Private label mortgage-backed securities-residential [Member] |  |
Fair value measured on recurring basis: |  |
Securities available for sale |  |

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

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=mgyr_USGovernmentSponsoredEnterprisesDebtSecuritiesResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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: |