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Restructuring and Related Charges (Tables)
 12 Months Ended
Sep. 30, 2020
Restructuring and Related Activities [Abstract]  
Schedule of restructuring components
The table below sets forth the amounts accrued for the restructuring components and related activity:
 
Year Ended September 30,
 
2020
 
2019
 
2018
Balance at beginning of the period
$
655

 
$
710

 
$
3,542

Restructuring charges following the sale of the Memcor product line
8,274

 
—

 
—

Restructuring charges related to two-segment realignment
2,092

 
11,090

 
—

Restructuring charges related to other initiatives (including VSP)
1,867

 
2,444

 
11,085

Release of prior reserves
(98
)
 
(541
)
 
(663
)
Write-off charges
(2,461
)
 
—

 
—

Cash payments
(9,367
)
 
(12,966
)
 
(13,280
)
Other adjustments
8

 
(82
)
 
26

Balance at end of the period
$
970

 
$
655

 
$
710


The table below sets forth the location of amounts recorded above on the Consolidated Statements of Operations:
 
Year Ended September 30,
 
2020
 
2019
 
2018
Cost of product sales and services
$
8,305

 
$
6,257

 
$
3,897

General and administrative expense
3,053

 
5,531

 
4,775

Sales and marketing expense
305

 
1,082

 
908

Research and development expense
23

 
123

 
606

Other operating expense, net
449

 
—

 
236


$
12,135

 
$
12,993

 
$
10,422