Note 13 - Employee Benefit Plans (Details) - Fair value of plan assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Cash and cash equivalents:
Fair value of plan assets	$ 14,585	$ 12,612	$ 12,350
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Fair value of plan assets	502	573
Money Market Funds [Member]
Cash and cash equivalents:
Fair value of plan assets	573	502
Carrying value of plan assets	502	573
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Fair value of plan assets	2,813	2,933
Corporate Debt Securities [Member]
Cash and cash equivalents:
Fair value of plan assets	2,933	2,813
Carrying value of plan assets	2,813	2,933
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Fair value of plan assets	1,899	1,863
US Government Agencies Debt Securities [Member]
Cash and cash equivalents:
Fair value of plan assets	1,863	1,899
Carrying value of plan assets	1,899	1,863
Closed End Equity Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Fair value of plan assets	7,691	6,342
Closed End Equity Mutual Funds [Member]
Cash and cash equivalents:
Fair value of plan assets	7,691	6,342
Carrying value of plan assets	7,691	6,342
Closed End Global Equity Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Fair value of plan assets	1,525	1,056
Closed End Global Equity Mutual Funds [Member]
Cash and cash equivalents:
Fair value of plan assets	1,525	1,056
Carrying value of plan assets	$ 1,525	$ 1,056