XML 39 R53.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Acquisitions (Details) - stores | 6 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Business Combinations [Abstract] |  |
Number of stores purchased | 5 | 0

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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