XML 73 R41.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Debt Securities - Overall Statistics for Company's AAA-Rated CMBS Investments Calculated on Weighted Average Basis (Detail) (Commercial Mortgage Backed Securities [Member]) | 3 Months Ended
--- | ---
Mar. 31, 2014 AAA-CCC Rated CMBS [Member] | Mar. 31, 2013 AAA Rated CMBS [Member]
Schedule of Available-for-sale Securities [Line Items] |  |
Coupon | 5.80% | 5.80%
Yield | 5.40% | 5.30%
Weighted Average Life | 3 years 1 month 12 days | 3 years 1 month 12 days

X
- Definition Available-for-sale Debt Securities, Weighted Average Discount Rate + References No definition available. + Details
Name: | ari_AvailableforsaleDebtSecuritiesWeightedAverageDiscountRate
Namespace Prefix: | ari_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Available-for-sale Debt Securities, Weighted Average Expected Term + References No definition available. + Details
Name: | ari_AvailableforsaleDebtSecuritiesWeightedAverageExpectedTerm
Namespace Prefix: | ari_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Available-for-sale Debt Securities, Weighted Average Interest Rate + References No definition available. + Details
Name: | ari_AvailableforsaleDebtSecuritiesWeightedAverageInterestRate
Namespace Prefix: | ari_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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