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v3.25.2

Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025
Transfers and Servicing [Abstract] |  |
Subservicing fee expenses | $ 0.2 | $ 0.4

X
- Definition Subservicing Fee Expenses + References No definition available. + Details
Name: | nymt_SubservicingFeeExpenses
Namespace Prefix: | nymt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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