Note 2 - Fair Value Measurements (Details) - Assets and liabilities carried at fair value as measured on a recurring basis (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013
Note 2 - Fair Value Measurements (Details) - Assets and liabilities carried at fair value as measured on a recurring basis [Line Items]
Total carrying value	$ 7,710	$ 5,693
Fair Value, Inputs, Level 1 [Member]
Note 2 - Fair Value Measurements (Details) - Assets and liabilities carried at fair value as measured on a recurring basis [Line Items]
Fair value	7,710	5,693
Fair Value, Inputs, Level 2 [Member]
Note 2 - Fair Value Measurements (Details) - Assets and liabilities carried at fair value as measured on a recurring basis [Line Items]
Fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Note 2 - Fair Value Measurements (Details) - Assets and liabilities carried at fair value as measured on a recurring basis [Line Items]
Fair value	$ 0	$ 0