Note 12 - Fair Value Measurements (Details) - Contractual maturities of available-for-sale investments (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013
Contractual maturities of available-for-sale investments [Abstract]
Due in one year or less	$ 9,969	$ 13,213
Due in one year or less	9,837	13,067
Due after one year through five years	3,570	2,463
Due after one year through five years	$ 3,594	$ 2,462