XML 65 R56.htm IDEA: XBRL DOCUMENT v3.22.2.2

Investment Securities Available for Sale, at Fair Value - Schedule of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value Option
Amortized Cost	$ 82,891	$ 154,581
Unrealized Gains	7,841	19,517
Unrealized Losses	(11,562)	(2,774)
Fair Value	79,170	171,324
CECL Securities
Amortized Cost	25,570	27,743
Unrealized Gains	0	1,787
Unrealized Losses	(2,054)	(10)
Fair Value	23,516	29,520
Total CECL Securities and Fair Value Option
Amortized Cost	108,461	182,324
Unrealized Gains	7,841	21,304
Unrealized Losses	(13,616)	(2,784)
Fair Value	102,686	200,844
Non-Agency RMBS
Fair Value Option
Amortized Cost	49,566	100,186
Unrealized Gains	7,700	949
Unrealized Losses	(9,553)	(2,636)
Fair Value	47,713	98,499
CECL Securities
Amortized Cost	25,570	27,743
Unrealized Gains	0	1,787
Unrealized Losses	(2,054)	(10)
Fair Value	23,516	29,520
CMBS
Fair Value Option
Amortized Cost	32,355	32,600
Unrealized Gains	0	684
Unrealized Losses	(2,009)	(138)
Fair Value	30,346	33,146
ABS
Fair Value Option
Amortized Cost	970	21,795
Unrealized Gains	141	17,884
Unrealized Losses	0	0
Fair Value	$ 1,111	$ 39,679

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, Gross Unrealized Losses, Fair Value Option

+ References

No definition available.

+ Details

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

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:	instant

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, Fair Value Option

+ References

No definition available.

+ Details

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

X

- Definition

Debt Securities, Available-for-sale, 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:	instant

X

- Definition

Total Debt Securities, Available for Sale, CECL and Fair Value [Abstract]

+ References

No definition available.

+ Details

Name:	nymt_TotalDebtSecuritiesAvailableforSaleCECLandFairValueAbstract
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_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract
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

- References

No definition available.

+ Details

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

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: