v3.3.1.900
Note 18 - Concentration of Risk in Customer and Supplier Relationships (Details) - Percentage of Gross Accounts Receivable - Accounts Receivable [Member] - Customer Concentration Risk [Member]
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
WDC Solar, Inc. [Member]    
Concentration Risk [Line Items]    
Percentage of accounts receivable 40.10%  
Lowe's Companies, Inc. [Member]    
Concentration Risk [Line Items]    
Percentage of accounts receivable 16.80%  
Sustainable Environmental Enterprises [Member]    
Concentration Risk [Line Items]    
Percentage of accounts receivable   86.70%
Smart Energy Today [Member]    
Concentration Risk [Line Items]    
Percentage of accounts receivable 6.50%