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Allowance for Doubtful Accounts (Tables)
3 Months Ended
Sep. 30, 2018
Receivables [Abstract]  
Changes in Carrying Amount of Allowance For Doubtful Accounts
Balance as of June 30, 2018
$
9,741

Bad debt expense
2,999

Write-off /adjustments
230

Balance as of September 30, 2018
$
12,970