XML 44 R31.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note 5 - Marketable Securities (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Marketable Securities, Current $ 0   $ 0   $ 2,198,000
Marketable Securities, Gain (Loss) $ 0 $ 0 $ 0 $ 0