Basis of Presentation (Details)	Jun. 30, 2013 item
Basis of Presentation
Number of states in which service is provided	14

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

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant