Note 3 - Fair Value Measurements and Other Financial Measurements (Details) - Level 3 Fair Values (USD $)	Jun. 30, 2013
Level 3 Fair Values [Abstract]
Warrant liabilities	$ 100,000

Fair value portion of warrants not settleable in cash classified as equity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant