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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]  
Allowance for doubtful accounts
 
Amount
Balances at June 30, 2015
$
1,437

Provision for doubtful accounts
375

Write-offs
(1,100
)
Balance at June 30, 2016
712

Provision for doubtful accounts
465

Write-offs
(313
)
Balance at June 30, 2017
864

Provision for doubtful accounts
125

Write-offs
(189
)
Balance at June 30, 2018
$
800

Warranty reserve, provisions and claims
 
Amount
Balances at June 30, 2015
$
126

Provision
490

Claims
(471
)
Balance at June 30, 2016
145

Provision
1,733

Claims
(1,361
)
Balance at June 30, 2017
517

Provision
328

Claims
(713
)
Balance at June 30, 2018
$
132