XML 76 R59.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Multi-family Loans, at Fair Value - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Net unrealized gains (losses) | $ 1.0 | $ (1.5) |
Loan premiums and early redemption | $ 2.5 | $ 1.1 | $ 3.8

X
- Definition Loan Premiums, Loans and Preferred Equity and Mezzanine Loans, Early Redemption + References No definition available. + Details
Name: | nymt_LoanPremiumsLoansAndPreferredEquityAndMezzanineLoansEarlyRedemption
Namespace Prefix: | nymt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Unrealized Gain (Loss) Loans and Preferred Equity and Mezzanine Loans + References No definition available. + Details
Name: | nymt_UnrealizedGainLossLoansAndPreferredEquityAndMezzanineLoans
Namespace Prefix: | nymt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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