Note 12 - Stockholder Rights Plan (Details) (Rights Agreement [Member], USD $)	6 Months Ended
Jun. 30, 2014
Rights Agreement [Member]
Note 12 - Stockholder Rights Plan (Details) [Line Items]
Investment Warrants, Exercise Price	$ 12.00

Exercise price of the warrants.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column A

Name:	invest_InvestmentWarrantsExercisePrice
Namespace Prefix:	invest_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration