XML 61 R51.htm IDEA: XBRL DOCUMENT
v3.23.2

LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Details) - Schedule of Allowance for Loan Losses by Loan Category - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2022
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | $ 8,844 | $ 8,750 | $ 8,433 | $ 8,300 | $ 8,228 | $ 8,075 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs | (386) | (102) |  |  |  |  |
Recoveries | 1 |  |  |  | 1 | 53 |
Provision (credit) | (81) | 196 | 317 | 205 | 71 | 100 |
Balance-Ending balance | 8,378 | 8,844 | 8,750 | 8,505 | 8,300 | 8,228 |
Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 8,433 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 8,378 |  |  |  |  |  |
Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  | $ 114
Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 8,378 |  |  |  |  |  | 8,319
Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 628,904 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 702,530 |  |  |  |  |  |
Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment | 3,851 |  |  |  |  |  | 5,659
Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 698,679 |  |  |  |  |  | 623,245
One-to Four- Family Residential [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 1,270 | 1,235 | 1,223 | 1,113 | 1,093 | 1,136 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries | 1 |  |  |  | 1 |  |
Provision (credit) | (102) | 35 | 12 | 35 | 19 | (43) |
Balance-Ending balance | 1,169 | 1,270 | 1,235 | 1,148 | 1,113 | 1,093 |
One-to Four- Family Residential [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 1,223 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 1,169 |  |  |  |  |  |
One-to Four- Family Residential [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
One-to Four- Family Residential [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 1,169 |  |  |  |  |  | 1,223
One-to Four- Family Residential [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 214,377 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 236,633 |  |  |  |  |  |
One-to Four- Family Residential [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment | 1,788 |  |  |  |  |  | 1,512
One-to Four- Family Residential [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 234,845 |  |  |  |  |  | 212,865
Commercial Real Estate [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 5,410 | 5,130 | 4,612 | 4,082 | 3,706 | 3,744 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries |  |  |  |  |  | 53 |
Provision (credit) | (318) | 280 | 518 | 334 | 376 | (90) |
Balance-Ending balance | 5,092 | 5,410 | 5,130 | 4,416 | 4,082 | 3,706 |
Commercial Real Estate [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 4,612 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 5,092 |  |  |  |  |  |
Commercial Real Estate [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Commercial Real Estate [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 5,092 |  |  |  |  |  | 4,612
Commercial Real Estate [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 342,791 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 402,349 |  |  |  |  |  |
Commercial Real Estate [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment | 1,138 |  |  |  |  |  | 1,159
Commercial Real Estate [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 401,211 |  |  |  |  |  | 341,632
Construction [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 468 | 526 | 461 | 803 | 724 | 594 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries |  |  |  |  |  |  |
Provision (credit) | (21) | (58) | 65 | (196) | 79 | 130 |
Balance-Ending balance | 447 | 468 | 526 | 607 | 803 | 724 |
Construction [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 461 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 447 |  |  |  |  |  |
Construction [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  | 114
Construction [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 447 |  |  |  |  |  | 347
Construction [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 15,230 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 19,249 |  |  |  |  |  |
Construction [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment | 777 |  |  |  |  |  | 2,835
Construction [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 18,472 |  |  |  |  |  | 12,395
Home Equity Lines of Credit [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 246 | 256 | 263 | 220 | 232 | 232 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries |  |  |  |  |  |  |
Provision (credit) | (15) | (10) | (7) | 5 | (12) |  |
Balance-Ending balance | 231 | 246 | 256 | 225 | 220 | 232 |
Home Equity Lines of Credit [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 263 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 231 |  |  |  |  |  |
Home Equity Lines of Credit [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Home Equity Lines of Credit [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 231 |  |  |  |  |  | 263
Home Equity Lines of Credit [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 18,704 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 18,737 |  |  |  |  |  |
Home Equity Lines of Credit [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Home Equity Lines of Credit [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 18,737 |  |  |  |  |  | 18,704
Commercial Business [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 1,335 | 1,375 | 1,484 | 1,839 | 2,129 | 2,046 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs | (386) | (102) |  |  |  |  |
Recoveries |  |  |  |  |  |  |
Provision (credit) | (41) | 62 | (109) | (62) | (290) | 83 |
Balance-Ending balance | 908 | 1,335 | 1,375 | 1,777 | 1,839 | 2,129 |
Commercial Business [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 1,484 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 908 |  |  |  |  |  |
Commercial Business [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Commercial Business [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 908 |  |  |  |  |  | 1,484
Commercial Business [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 34,672 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 23,129 |  |  |  |  |  |
Commercial Business [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment | 148 |  |  |  |  |  | 153
Commercial Business [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 22,981 |  |  |  |  |  | 34,519
Other [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 1 | 1 | 1 | 2 | 1 | 15 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries |  |  |  |  |  |  |
Provision (credit) |  |  |  | (1) | 1 | (14) |
Balance-Ending balance | 1 | 1 | 1 | 1 | 2 | 1 |
Other [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 1 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 1 |  |  |  |  |  |
Other [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Other [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 1 |  |  |  |  |  | 1
Other [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 3,130 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 2,433 |  |  |  |  |  |
Other [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Other [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 2,433 |  |  |  |  |  | 3,130
Unallocated [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance | 114 | 227 | 389 | 241 | 343 | 308 |
Allowance for Loan Losses: |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |
Recoveries |  |  |  |  |  |  |
Provision (credit) | 416 | (113) | (162) | 90 | (102) | 35 |
Balance-Ending balance | 530 | $ 114 | 227 | $ 331 | $ 241 | $ 343 |
Unallocated [Member] | Allowance for Loan Losses Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  | 389 |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance | 530 |  |  |  |  |  |
Unallocated [Member] | Allowance for Loan Losses Individually evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Unallocated [Member] | Allowance for Loan Losses Collectively evaluated for impairment One [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment | 530 |  |  |  |  |  | 389
Unallocated [Member] | Loans receivable Beginning [Member] |  |  |  |  |  |  |
Schedule of Allowance for Loan Losses by Loan Category [Abstract] |  |  |  |  |  |  |
Balance - Beginning balance |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Balance-Ending balance |  |  |  |  |  |  |
Unallocated [Member] | Loans receivable Individually evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |
Unallocated [Member] | Loans receivable Collectively evaluated for impairment [Member] |  |  |  |  |  |  |
Allowance for Loan Losses: |  |  |  |  |  |  |
Collectively evaluated for impairment |  |  |  |  |  |  |

X
- References No definition available. + Details
Name: | mgyr_AllowanceForLoanLossesAbstract0
Namespace Prefix: | mgyr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of charge-off means a lender or creditor has written the account off as a loss, and the account is closed to future charges. It may be sold to a debt buyer or transferred to a collection agency. You are still legally obligated to pay the debt. + References No definition available. + Details
Name: | mgyr_Chargeoffs
Namespace Prefix: | mgyr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + 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(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L(5)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to other loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(14)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
Name: | us-gaap_ProvisionForOtherLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_AllowanceForLoanLossesBeginningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_AllowanceForLoanLossesIndividuallyEvaluatedForImpairmentOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_AllowanceForLoanLossesCollectivelyEvaluatedForImpairmentOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_LoansReceivableBeginningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_LoansReceivableIndividuallyEvaluatedForImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=mgyr_LoansReceivableCollectivelyEvaluatedForImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mgyr_Residential1To4FamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mgyr_FinancingReceivableOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnallocatedFinancingReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |