Basis of presentation (Details)	Dec. 31, 2011 markets properties
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Properties	8
Number of Markets in which Entity Operates	7

The number of markets in which the entity operates in as of the balance sheet date.

No definition available.

Name:	asca_NumberOfMarketsInWhichEntityOperates
Namespace Prefix:	asca_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant