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Allowance For Doubtful Accounts (Tables)
 12 Months Ended
Jun. 30, 2012
Allowance For Doubtful Accounts [Abstract]  
Changes In Carrying Amount Of Allowance For Doubtful Accounts
Balance of allowance for doubtful accounts as of June 30, 2009
$
4,208

Bad debt expense for the period
4,683

Write-off /adjustments
(4,023
)
Balance of allowance for doubtful accounts as of June 30, 2010
4,868

Bad debt expense for the period
2,602

Write-off /adjustments
(2,046
)
Balance of allowance for doubtful accounts as of June 30, 2011
5,424

Bad debt expense for the period
3,443

Write-off /adjustments
(3,212
)
Balance of allowance for doubtful accounts as of June 30, 2012
$
5,655