XML 22 R73.htm IDEA: XBRL DOCUMENT v2.4.0.6

Schedule IV - Mortgage Loans on Real Estate (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012
Mortgage Loans on Real Estate [Line Items]
Aggregate cost for federal income tax purposes	$ 389,167

X

- Definition

Real Estate Aggregate Cost For Tax Purposes

+ References

No definition available.

+ Details

Name:	ari_RealEstateAggregateCostForTaxPurposes
Namespace Prefix:	ari_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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