Commitments and Contingencies (Details 2) (Derivative complaints)	3 Months Ended
Mar. 31, 2013 Claim
Derivative complaints
Legal Proceedings & Investigations
Number of lawsuits consolidated into a single action	4

The number of lawsuits that were consolidated into a single action.

No definition available.

Name:	afam_LossContingencyNumberOfLawsuitsConsolidatedIntoSingleAction
Namespace Prefix:	afam_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration