Note 1 - Summary of Accounting Policies (Details) - Changes in allowances for uncollectible accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Changes in allowances for uncollectible accounts [Abstract]
Balance at beginning of year	$ 1,986	$ 2,201	$ 1,882
Provision charged to expense	453	366	697
Write-offs, net of recoveries	(107)	(581)	(378)
Balance at end of year	$ 2,332	$ 1,986	$ 2,201