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Note 1 - Summary of Accounting Policies - Changes in Allowances for Uncollectible Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Balance at beginning of year $ 2,226 $ 2,282 $ 2,325
Acquisitions and other 3 4 93
Provision charged to expense 8 496 375
Write-offs, net of recoveries (118) (556) (511)
Balance at end of year $ 2,119 $ 2,226 $ 2,282