Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Intangible Assets (Details Textual)

v3.5.0.2
Note 4 - Intangible Assets (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
PCB Permit [Member]        
Number of Definite-lived Permits     1  
Amortization of Intangible Assets $ 138,000 $ 125,000 $ 240,000 $ 252,000