v3.3.1.900
Note 2 - Significant Accounting Policies (Details) - Liability for Manufacturing Warranty - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Dec. 31, 2013
Product Warranty Liability [Line Items]      
Beginning accrued warranty balance $ 938,466 $ 1,312,918 $ 1,372,342
Reduction for labor payments and claims made under the warranty (107,669) (75,966) (79,134)
Adjustment to warranty liability for discontinued operations   (324,349)  
Accruals related to warranties issued during the period 23,283 25,863 19,710
Ending accrued warranty balance $ 854,080 938,466 $ 1,312,918
Discontinued Operations [Member]      
Product Warranty Liability [Line Items]      
Adjustment to warranty liability for discontinued operations   $ (324,349)