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Revenue (Tables 2)
 12 Months Ended
Nov. 29, 2019
Allowance for Doubtful Accounts  
Movement in Valuation Allowances and Reserves  
Allowance for doubtful accounts rollforward
During fiscal 2019, 2018 and 2017, our allowance for doubtful accounts activities were as follows:
(in thousands)
 
2019
 
2018
 
2017
Beginning balance
 
$
14,981

 
$
9,151

 
$
6,214

Increase due to acquisition
 
10

 
5,602

 
2,391

Charged to operating expenses
 
5,324

 
5,962

 
4,411

Deductions(1)
 
(10,665
)
 
(5,734
)
 
(3,865
)
Ending balance
 
$
9,650

 
$
14,981

 
$
9,151

________________________________________ 
(1)  
Deductions related to the allowance for doubtful accounts represent amounts written off against the allowance, less recoveries.
Revenue Reserve  
Movement in Valuation Allowances and Reserves  
Revenue reserve rollforward
During fiscal 2019, 2018 and 2017, our revenue reserve activities were as follows:
(in thousands)
 
2019
 
2018
 
2017
Beginning balance
 
$
25,425

 
$
22,006

 
$
23,096

Impacts of adoption of the new revenue standard
 
(14,733
)
 
—

 
—

Amount charged to revenue
 
18,276

 
65,241

 
61,031

Actual returns
 
(22,236
)
 
(61,822
)
 
(62,121
)
Ending balance
 
$
6,732

 
$
25,425

 
$
22,006