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: