Note 7 - Accumulated Other Comprehensive Income (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
ChemoCentryx, Inc (CCXI) [Member] \| Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), Net of Tax			$ (13,700)
ChemoCentryx, Inc (CCXI) [Member]
Available-for-sale Securities, Cost Basis Per Share	$ 4.73		$ 4.73
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), Net of Tax			$ (32,605)
ChemoCentryx, Inc (CCXI) [Member]
Share Price	$ 2.49		$ 2.49
Other Comprehensive Income (Loss), Net of Tax	$ (24,953)	$ (17,145)	$ (45,867)	$ (36,234)