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SIGNIFICANT ACCOUNTING POLICIES (Details 5)	Mar. 31, 2014 loan	Dec. 31, 2013 loan	Dec. 31, 2012 loan
Mortgage Loans Receivable Held for Investment
Number of mortgage loans impaired	0	0	0

X

- Definition

Represents the number of mortgage loans individually impaired.

+ References

No definition available.

+ Details

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

X

- Details

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