XML 79 R63.htm IDEA: XBRL DOCUMENT
v3.25.4

Financing - Summary of repurchase agreements (Details) $ in Thousands | Dec. 31, 2025 USD ($)
--- | ---
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | $ 8,243,031
Total Financing Arrangements |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 826,394
Total Financing Arrangements | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 246,445
Total Financing Arrangements | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 436,504
Total Financing Arrangements | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 143,445
Total Financing Arrangements | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Non-Agency Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 29,817
Non-Agency Loans | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 428,657
Non-Agency Loans | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Non-Agency Loans | Within 30 Days | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 154,556
Non-Agency Loans | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Non-Agency Loans | Over 30 Days to 3 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 242,563
Non-Agency Loans | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 29,817
Non-Agency Loans | Over 3 Months to 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 31,538
Non-Agency Loans | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Non-Agency Loans | Over 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Re- and Non-Performing Loans | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 27,264
Re- and Non-Performing Loans | Within 30 Days | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 10,518
Re- and Non-Performing Loans | Over 30 Days to 3 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 16,746
Re- and Non-Performing Loans | Over 3 Months to 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Re- and Non-Performing Loans | Over 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Agency-Eligible Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 19,490
Agency-Eligible Loans | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Agency-Eligible Loans | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Agency-Eligible Loans | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 19,490
Agency-Eligible Loans | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Home Equity Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 58,951
Home Equity Loans | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 67,752
Home Equity Loans | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Home Equity Loans | Within 30 Days | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 38,620
Home Equity Loans | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Home Equity Loans | Over 30 Days to 3 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 29,132
Home Equity Loans | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 58,951
Home Equity Loans | Over 3 Months to 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Home Equity Loans | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Home Equity Loans | Over 12 Months | Securitized Residential Mortgage Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC Commercial Loans |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 27,436
Legacy WMC Commercial Loans | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC Commercial Loans | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 27,436
Legacy WMC Commercial Loans | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC Commercial Loans | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Non-Agency RMBS |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 137,386
Non-Agency RMBS | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 41,828
Non-Agency RMBS | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 92,153
Non-Agency RMBS | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 3,405
Non-Agency RMBS | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC CMBS |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 18,540
Legacy WMC CMBS | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC CMBS | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 18,540
Legacy WMC CMBS | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Legacy WMC CMBS | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Agency RMBS |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 10,857
Agency RMBS | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 923
Agency RMBS | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 9,934
Agency RMBS | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Agency RMBS | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Other assets |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 244
Other assets | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Other assets | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Other assets | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 244
Other assets | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Senior Notes |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 99,500
Senior Notes | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Senior Notes | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Senior Notes | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
Senior Notes | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 99,500
February 2029 Senior Unsecured Notes |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 34,500
February 2029 Senior Unsecured Notes | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
February 2029 Senior Unsecured Notes | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
February 2029 Senior Unsecured Notes | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
February 2029 Senior Unsecured Notes | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 34,500
May 2029 Senior Unsecured Notes |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 65,000
May 2029 Senior Unsecured Notes | Within 30 Days |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
May 2029 Senior Unsecured Notes | Over 30 Days to 3 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
May 2029 Senior Unsecured Notes | Over 3 Months to 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | 0
May 2029 Senior Unsecured Notes | Over 12 Months |
Assets Sold under Agreements to Repurchase [Line Items] |
Current Face | $ 65,000

X
- Definition Assets Sold Under Agreements To Repurchase, Current Face + References No definition available. + Details
Name: | mitt_AssetsSoldUnderAgreementsToRepurchaseCurrentFace
Namespace Prefix: | mitt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(m)(1)(ii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 + Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_FinancingArrangementsExcludingNonRecourseSecuritizedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_MaturityUpTo30DaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_Maturity30To90DaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=mitt_MaturityThreeMonthsToTwelveMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=mitt_MaturityGreaterThanTwelveMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_NonQualifiedMortgageLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_ReperformingAndNonperformingFinancialInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_CommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_SeniorNotesDueFebruary2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mitt_SeniorNotesDueMay2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |