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Restructuring Expenses (Tables)
 12 Months Ended
Sep. 30, 2017
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs
The following tables summarize our restructuring accruals associated with the above actions. The current portion and non-current portion was recorded in other accrued liabilities and other liabilities, respectively, within the accompanying consolidated balance sheets.
 
Accrual at September 30, 2015
 
Expense
Additions
 
Cash
Payments
 
Accrual at September 30, 2016
 
(In thousands)
Facilities charges
$
12,995

 
$
—

 
$
(3,762
)
 
$
9,233

Employee separation
2,405

 
—

 
(2,405
)
 
—

 
15,400

 
$
—

 
$
(6,167
)
 
9,233

Less: current portion
(5,570
)
 
 
 
 
 
(4,266
)
Non-current
$
9,830

 
 
 
 
 
$
4,967

 
 
Accrual at September 30, 2016
 
Expense
Additions
 
Cash
Payments
 
Accrual at September 30, 2017
 
(In thousands)
Facilities charges
$
9,233

 
$
1,729

 
$
(2,842
)
 
$
8,120

Employee separation
—

 
2,742

 
(2,557
)
 
185

 
9,233

 
$
4,471

 
$
(5,399
)
 
8,305

Less: current portion
(4,266
)
 
 
 
 
 
(3,077
)
Non-current
$
4,967

 
 
 
 
 
$
5,228