Line Of Credit Facility, Length Of Extension Option

No definition available.

Name:	ladr_LineOfCreditFacilityLengthOfExtensionOption
Namespace Prefix:	ladr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Number of Additional Extensions of Maturity Period

+ References

No definition available.

+ Details

Name:	ladr_LineofCreditFacilityNumberofAdditionalExtensionsofMaturityPeriod
Namespace Prefix:	ladr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the committed but unfunded amount, as of the balance sheet date, of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo.

+ References

No definition available.

+ Details

Name:	ladr_SecuritiesSoldUnderAgreementsToRepurchaseCommittedButUnfundedAmount
Namespace Prefix:	ladr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=ladr_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SecuritiesFinancingTransactionAxis=us-gaap_RevolvingCreditFacilityMember
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SecuritiesFinancingTransactionAxis=ladr_CommittedMasterRepurchaseAgreementsMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=ladr_Maturing27July2023Member
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DEBT OBLIGATIONS, NET - Revolving Credit Facility (Details)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 27, 2022 USD ($) extensionOfMaturityPeriod
Debt Instrument [Line Items]
Carrying Value of Debt Obligations	$ 769,266,000	$ 847,863,000
Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Committed amount on credit agreement			$ 323,900,000
Revolving credit facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Committed amount on credit agreement	323,900,000
Revolving credit facility \| Secured Overnight Financing Rate (SOFR) \| Line of Credit
Debt Instrument [Line Items]
Stated interest rate on debt instrument			2.50%
Letter of Credit
Debt Instrument [Line Items]
Committed amount on credit agreement	25,000,000
Revolving credit facility \| Maturing on 11 February 2023
Debt Instrument [Line Items]
Carrying Value of Debt Obligations	0
Committed Loan Repurchase Facility
Debt Instrument [Line Items]
Carrying Value of Debt Obligations	651,224,000	616,894,000
Committed but Unfunded	$ 548,776,000	$ 683,106,000
Committed Loan Repurchase Facility \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Length of extension options			1 year
Committed Loan Repurchase Facility \| Maturing 27 July 2023 \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Number of additional extension maturity periods \| extensionOfMaturityPeriod			4