Note 6 - Acquisitions (Details) (Stores [Member])	9 Months Ended
Jan. 31, 2014
Stores [Member]
Note 6 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	24

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

No definition available.

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