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Restructuring (Tables)
 6 Months Ended
Mar. 31, 2019
Restructuring and Related Activities [Abstract]  
Restructuring Activity
The table below details the activity for the six months ended March 31, 2019 related to the above action as well as additional headcount reductions as we consolidated satellite offices in our Semiconductor segment and the outstanding obligations as of March 31, 2019, in thousands:

 
Six Months Ended March 31, 2019
Balance at September 30, 2018
$
—

Severance expense, net of adjustments
1,037

Cash payments
(49
)
Balance at March 31, 2019
$
988