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Note 1 - Summary of Accounting Policies (Details) - Changes in Allowances for Uncollectible Accounts - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Changes in Allowances for Uncollectible Accounts [Abstract]      
Balance at beginning of year $ 2,282 $ 2,325 $ 1,974
Acquisitions and other 4 93 190
Provision charged to expense 496 375 268
Write-offs, net of recoveries (556) (511) (107)
Balance at end of year $ 2,226 $ 2,282 $ 2,325