XML 97 R82.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Schedule IV - Mortgage Loans on Real Estate (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2012
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Face amount of loans | $ 1,029,173 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent | [1],[2] |  |  |
Mortgage Loans on Real Estate | 1,019,702 us-gaap_MortgageLoansOnRealEstate | [1],[2] | 658,583 us-gaap_MortgageLoansOnRealEstate | 389,167 us-gaap_MortgageLoansOnRealEstate |
Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 6.84%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  | 8.82%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  |
Face amount of loans | 465,574 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  | 161,600 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  |
Carrying Value | 458,520 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  | 161,099 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  |
Total commercial mortgage loans | 458,520 us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember |  |  |  |
Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.34%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember |  | 11.60%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember |  |
Face amount of loans | 563,599 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember | [1] | 500,037 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember |  |
Carrying Value | 561,182 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember | [1] | 497,484 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember |  |
Hotel - Silver Spring, MD [Member] | Hotel [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelSilverSpringMDMember |  |  |  |
Face amount of loans | 24,590 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelSilverSpringMDMember |  | 24,947 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelSilverSpringMDMember |  |
Carrying Value | 24,557 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelSilverSpringMDMember |  | 24,785 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelSilverSpringMDMember |  |
Condo Conversion - NY, NY August 2013 [Member] | Condo Conversion [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.67%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYAugust2013Member |  |  |  |
Face amount of loans | 33,846 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYAugust2013Member |  | 33,167 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYAugust2013Member |  |
Carrying Value | 33,961 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYAugust2013Member |  | 32,961 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYAugust2013Member |  |
Condo Construction Potomac, MD [Member] | Condo Construction [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 10.50%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionPotomacMDMember |  |  |  |
Face amount of loans | 28,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionPotomacMDMember |  |  |  |
Carrying Value | 27,520 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionPotomacMDMember |  |  |  |
Vacation Home Portfolio - Various [Member] | Vacation Home Portfolio [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 7.50%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousMember |  |  |  |
Face amount of loans | 100,046 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousMember |  |  |  |
Carrying Value | 99,086 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousMember |  |  |  |
Condo Construction Bethesda, MD [Member] | Condo Construction [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 10.75%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionBethesdaMDMember |  |  |  |
Face amount of loans | 20,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionBethesdaMDMember |  |  |  |
Carrying Value | 19,616 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionBethesdaMDMember |  |  |  |
Multifamily, Brooklyn, NY [Member] | Multifamily Conversion [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 4.41%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyBrooklynNYMember |  |  |  |
Face amount of loans | 30,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyBrooklynNYMember |  |  |  |
Carrying Value | 30,110 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyBrooklynNYMember |  |  |  |
Mixed Use - Cincinnati, OH [Member] | Mixed Use [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseCincinnatiOHMember |  |  |  |
Face amount of loans | 20,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseCincinnatiOHMember |  |  |  |
Carrying Value | 18,309 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseCincinnatiOHMember |  |  |  |
Condo Conversion - NY, NY November 2014 [Member] | Condo Conversion [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 3.75%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNYNYNovember2014Member |  |  |  |
Face amount of loans | 67,300 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNYNYNovember2014Member |  |  |  |
Carrying Value | 64,714 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNYNYNovember2014Member |  |  |  |
Multifamily - Williston, ND [Member] | Multifamily Conversion [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 5.15%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyWillistonNDMember |  |  |  |
Face amount of loans | 57,792 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyWillistonNDMember |  |  |  |
Carrying Value | 57,297 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyWillistonNDMember |  |  |  |
Vacation Home Portfolio - Various, United States [Member] | Vacation Home Portfolio [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 7.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousUnitedStatesMember |  |  |  |
Face amount of loans | 50,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousUnitedStatesMember |  |  |  |
Carrying Value | 49,508 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_VacationHomePortfolioMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_VacationHomePortfolioVariousUnitedStatesMember |  |  |  |
Hotel - Philadelphia, PA [Member] | Hotel [Member] | Commercial mortgage loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 4.71%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPhiladelphiaPAMember |  |  |  |
Face amount of loans | 34,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPhiladelphiaPAMember |  |  |  |
Carrying Value | 33,842 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_CommercialMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPhiladelphiaPAMember |  |  |  |
Mixed Use - Various [Member] | Mixed Use [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 14.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseVariousMember | [1] |  |  |
Face amount of loans | 19,464 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseVariousMember | [1] | 17,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseVariousMember |  |
Carrying Value | 19,294 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseVariousMember | [1] | 16,805 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseVariousMember |  |
Mixed Use - London, England [Member] | Mixed Use [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseLondonEnglandMember | [1] |  |  |
Face amount of loans | 52,355 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseLondonEnglandMember | [1] |  |  |
Carrying Value | 52,355 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseLondonEnglandMember | [1] |  |  |
Office - Michigan [Member] | Office [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 13.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeMichiganMember | [1] |  |  |
Face amount of loans | 8,813 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeMichiganMember | [1] | 15,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeMichiganMember |  |
Carrying Value | 8,813 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeMichiganMember | [1] | 15,207 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeMichiganMember |  |
Ski Resort - California [Member] | Ski Resort [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 13.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortCaliforniaMember | [1] |  |  |
Face amount of loans | 40,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortCaliforniaMember | [1] |  |  |
Carrying Value | 39,771 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortCaliforniaMember | [1] |  |  |
Mixed Use - North Carolina [Member] | Mixed Use [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.10%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNorthCarolinaMember | [1] |  |  |
Face amount of loans | 6,525 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNorthCarolinaMember | [1] |  |  | 6,525 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNorthCarolinaMember
Carrying Value | 6,525 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNorthCarolinaMember | [1] | 6,525 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNorthCarolinaMember |  |
Office Complex - Missouri [Member] | Office [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.75%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeComplexMissouriMember | [1] |  |  |
Face amount of loans | 9,711 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeComplexMissouriMember | [1] |  |  | 9,849 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeComplexMissouriMember
Carrying Value | 9,711 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeComplexMissouriMember | [1] | 9,849 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeComplexMissouriMember |  |
Hotel Portfolio - Various [Member] | Hotel [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.07%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioVariousMember | [1] |  |  |
Face amount of loans | 34,042 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioVariousMember | [1] |  |  | 48,431 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioVariousMember
Carrying Value | 33,995 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioVariousMember | [1] | 48,397 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioVariousMember |  |
Condo Construction - NY, NY [Member] | Condo Construction [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 13.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionNewYorkNYMember | [1] |  |  |
Face amount of loans | 76,344 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionNewYorkNYMember | [1] |  |  |
Carrying Value | 76,005 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConstructionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConstructionNewYorkNYMember | [1] |  |  |
Multifamily Conversion - NY, NY December 2014 [Member] | Multifamily Conversion [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 10.23%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionDecember2014Member | [1] |  |  |
Face amount of loans | 14,608 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionDecember2014Member | [1] |  |  | 18,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionDecember2014Member
Carrying Value | 14,703 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionDecember2014Member | [1] | 17,906 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionDecember2014Member |  |
Hotel Portfolio - Rochester, MN [Member] | Hotel [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioRochesterMNMember | [1] |  |  |
Face amount of loans | 24,486 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioRochesterMNMember | [1] | 24,771 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioRochesterMNMember |  |
Carrying Value | 24,486 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioRochesterMNMember | [1] | 24,771 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelPortfolioRochesterMNMember |  |
Warehouse Portfolio - Various [Member] | Warehouse [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.50%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_WarehouseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_WarehousePortfolioVariousMember | [1] |  |  |
Face amount of loans | 32,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_WarehouseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_WarehousePortfolioVariousMember | [1] | 32,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_WarehouseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_WarehousePortfolioVariousMember |  |
Carrying Value | 32,000 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_WarehouseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_WarehousePortfolioVariousMember | [1] | 32,000 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_WarehouseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_WarehousePortfolioVariousMember |  |
Multifamily Conversion - NY, NY June 2014 [Member] | Multifamily Conversion [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 12.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionJune2014Member | [1] |  |  |
Face amount of loans | 44,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionJune2014Member | [1] |  |  |
Carrying Value | 43,989 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MultifamilyConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MultifamilyConversionJune2014Member | [1] |  |  |
Office Condo - NY, NY [Member] | Office [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 11.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeCondoNewYorkNYMember | [1] |  |  |
Face amount of loans | 14,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeCondoNewYorkNYMember | [1] | 14,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeCondoNewYorkNYMember |  |
Carrying Value | 13,596 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeCondoNewYorkNYMember | [1] | 13,565 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_OfficeMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_OfficeCondoNewYorkNYMember |  |
Condo Conversion - NY, NY September 2015 [Member] | Condo Conversion [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.67%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYSeptember2015Member | [1] |  |  |
Face amount of loans | 29,751 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYSeptember2015Member | [1] | 295 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYSeptember2015Member |  |
Carrying Value | 29,762 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYSeptember2015Member | [1] | 2 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_CondoConversionMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_CondoConversionNewYorkNYSeptember2015Member |  |
Mixed Use - Pittsburgh, PA [Member] | Mixed Use [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.42%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUsePittsburghPAMember | [1] |  |  |
Face amount of loans | 22,500 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUsePittsburghPAMember | [1] | 22,500 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUsePittsburghPAMember |  |
Carrying Value | 22,473 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUsePittsburghPAMember | [1] | 22,342 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUsePittsburghPAMember |  |
Healthcare Portfolio - Various [Member] | Healthcare [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 9.43%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_HealthcareMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HealthcarePortfolioVariousMember | [1] |  |  |
Face amount of loans | 50,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_HealthcareMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HealthcarePortfolioVariousMember | [1] | 47,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_HealthcareMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HealthcarePortfolioVariousMember |  |
Carrying Value | 50,000 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_HealthcareMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HealthcarePortfolioVariousMember | [1] | 47,000 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_HealthcareMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HealthcarePortfolioVariousMember |  |
Hotel - NY, NY, July 2016 [Member] | Hotel [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 10.25%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelNYNYJuly2016Member | [1] |  |  |
Face amount of loans | 20,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelNYNYJuly2016Member | [1] |  |  |
Carrying Value | 19,870 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_HotelMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_HotelNYNYJuly2016Member | [1] |  |  |
Ski Resort Montana [Member] | Ski Resort [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 14.00%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortMontanaMember | [1] |  |  |
Face amount of loans | 15,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortMontanaMember | [1] |  |  |
Carrying Value | 14,861 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_SkiResortMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_SkiResortMontanaMember | [1] |  |  |
Mixed Use - New York, NY [Member] | Mixed Use [Member] | Subordinate Loans [Member] |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |
Interest Rate | 10.66%us-gaap_MortgageLoansOnRealEstateInterestRate / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNewYorkNYMember | [1] |  |  |
Face amount of loans | 50,000 ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNewYorkNYMember | [1] |  |  |
Carrying Value | $ 48,973 us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = ari_MixedUseMember / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = ari_SubordinateMortgageLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = ari_MixedUseNewYorkNYMember | [1] |  |  |
[1] | Subject to prior liens.
[2] | The aggregate cost for federal income tax purposes is $1,019,702.

X
- Definition Loans held for investment current face amount. + References No definition available. + Details
Name: | ari_MortgageLoansonRealEstateFaceAmountofMortgagesCurrent
Namespace Prefix: | ari_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total carrying amount of mortgage loans as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of the outstanding balance due under the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph c -Article 7 + Details
Name: | us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateLoanTypeAxis=ari_CommercialMortgageLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateLoanTypeAxis=ari_SubordinateMortgageLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConstructionBethesdaMDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConstructionNewYorkNYMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConstructionPotomacMDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConversionNewYorkNYAugust2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConversionNewYorkNYSeptember2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_CondoConversionNYNYNovember2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HealthcarePortfolioVariousMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelNYNYJuly2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelPhiladelphiaPAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelPortfolioRochesterMNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelPortfolioVariousMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelSilverSpringMDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUseCincinnatiOHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUseLondonEnglandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUseNewYorkNYMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUseNorthCarolinaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUsePittsburghPAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MixedUseVariousMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MultifamilyBrooklynNYMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MultifamilyConversionDecember2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MultifamilyConversionJune2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_MultifamilyWillistonNDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_OfficeComplexMissouriMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_OfficeCondoNewYorkNYMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_OfficeMichiganMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_SkiResortCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_SkiResortMontanaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_VacationHomePortfolioVariousMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_VacationHomePortfolioVariousUnitedStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_WarehousePortfolioVariousMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |