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Acquisitions (Details)	9 Months Ended		1 Months Ended
	Sep. 30, 2014 stores	Sep. 30, 2013 stores	Oct. 22, 2014 Subsequent Event [Member] stores
Subsequent Event [Line Items]
Number of stores purchased	1	3	4

X

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration