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Restructuring Costs (Tables)
 12 Months Ended
Sep. 29, 2018
Restructuring and Related Activities [Abstract]  
Restructuring Accrual Activity
The Company's restructuring accrual activity for the years ended September 29, 2018, September 30, 2017 and October 1, 2016 is included in the table below (in thousands):
 
 
Employee Termination and Severance Costs
 
Lease Obligations and Other Exit Costs
 
Total
Accrual balance, October 3, 2015
 
$
—

 
$
—

 
$
—

Restructuring costs
 
5,255

 
1,779

 
7,034

Amounts utilized
 
(4,571
)
 
(1,621
)
 
(6,192
)
Accrual balance, October 1, 2016
 
$
684

 
$
158

 
$
842

Restructuring costs
 
—

 
—

 
—

Amounts utilized
 
(684
)
 
(158
)
 
(842
)
Accrual balance, September 30, 2017
 
$
—

 
$
—

 
$
—

Restructuring costs
 
—

 
—

 
—

Amounts utilized
 
—

 
—

 
—

Accrual balance, September 29, 2018
 
$
—

 
$
—

 
$
—