XML 61 R51.htm IDEA: XBRL DOCUMENT v3.5.0.2
Note 8 - Marketable Securities, Available-for-sale (Details Textual)
9 Months Ended
Sep. 30, 2016
USD ($)
Available-for-sale Securities [Member]  
Marketable Securities, Unrealized Gain (Loss) $ 348,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax $ 392,000