XML 79 R65.htm IDEA: XBRL DOCUMENT v3.22.4

Investment Securities Available For Sale, at Fair Value - Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value Option
Amortized Cost	$ 81,788	$ 154,581
Unrealized Gains	9,495	19,517
Unrealized Losses	(15,369)	(2,774)
Fair Value	75,914	171,324
CECL Securities
Amortized Cost	25,616	27,743
Unrealized Gains	0	1,787
Unrealized Losses	(1,971)	(10)
Fair Value	23,645	29,520
Debt securities, available-for-sale, CECL and fair value option, amortized cost	107,404	182,324
Debt securities, available-for-sale, CECL and fair value option, accumulated gross unrealized gain, before tax	9,495	21,304
Debt Securities, Available-For-Sale, CECL And Fair Value Option, Accumulated Gross Unrealized Loss, before Tax	(17,340)	(2,784)
Debt securities, available-for-sale, CECL and fair value option	99,559	200,844
Non-Agency RMBS
Fair Value Option
Amortized Cost	48,958	100,186
Unrealized Gains	9,436	949
Unrealized Losses	(13,469)	(2,636)
Fair Value	44,925	98,499
CECL Securities
Amortized Cost	25,616	27,743
Unrealized Gains	0	1,787
Unrealized Losses	(1,971)	(10)
Fair Value	23,645	29,520
CMBS
Fair Value Option
Amortized Cost	32,033	32,600
Unrealized Gains	0	684
Unrealized Losses	(1,900)	(138)
Fair Value	30,133	33,146
ABS
Fair Value Option
Amortized Cost	797	21,795
Unrealized Gains	59	17,884
Unrealized Losses	0	0
Fair Value	$ 856	$ 39,679

X

- Definition

Debt Securities, Available-For-Sale, Amortized Cost, Fair Value Option

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleAmortizedCostFairValueOption
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Debt Securities, Available-For-Sale, CECL And Fair Value Option

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleCECLAndFairValueOption
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Debt Securities, Available-For-Sale, CECL And Fair Value Option, Accumulated Gross Unrealized Gain, before Tax

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleCECLAndFairValueOptionAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Debt Securities, Available-For-Sale, CECL And Fair Value Option, Accumulated Gross Unrealized Loss, before Tax

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleCECLAndFairValueOptionAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Debt Securities, Available-For-Sale, CECL And Fair Value Option, Amortized Cost

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleCECLAndFairValueOptionAmortizedCost
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Debt Securities, Available-for-sale, Fair Value Option

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleFairValueOption
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Debt Securities, Available-For-Sale, Gross Unrealized Gains, Fair Value Option

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleGrossUnrealizedGainsFairValueOption
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Debt Securities, Available-For-Sale, Gross Unrealized Loss, Fair Value Option

+ References

No definition available.

+ Details

Name:	nymt_DebtSecuritiesAvailableForSaleGrossUnrealizedLossFairValueOption
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Investment Securities, Available-for-sale

+ References

No definition available.

+ Details

Name:	nymt_InvestmentSecuritiesAvailableForSaleAbstract
Namespace Prefix:	nymt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=nymt_NonAgencyRMBSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=nymt_CMBSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: