XML 63 R54.htm IDEA: XBRL DOCUMENT
v3.22.1

Multi-family Loans, at Fair Value - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Receivables [Abstract] |  |
Unrealized gains (losses) | $ 0.5 | $ 0.1
Loan premiums, early redemption | $ (0.8) | $ (0.6)

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 + 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_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration