XML 45 R27.htm IDEA: XBRL DOCUMENT v3.8.0.1
Basis of Presentation and Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 01, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Revenue reserve rollforward
Revenue Reserve
Revenue reserve rollforward (in thousands):
 
 
2017
 
2016
 
2015
Beginning balance
 
$
23,096

 
$
19,446

 
$
17,402

Amount charged to revenue
 
61,031

 
55,739

 
45,676

Actual returns
 
(62,121
)
 
(52,089
)
 
(43,632
)
Ending balance
 
$
22,006

 
$
23,096

 
$
19,446
Allowance for doubtful accounts
(in thousands)
 
2017
 
2016
 
2015
Beginning balance
 
$
6,214

 
$
7,293

 
$
7,867

Increase due to acquisition
 
2,391

 
77

 
326

Charged to operating expenses
 
4,411

 
1,337

 
1,472

Deductions(1)
 
(3,865
)
 
(2,493
)
 
(2,372
)
Ending balance
 
$
9,151

 
$
6,214

 
$
7,293

________________________________________ 
(1)  
Deductions related to the allowance for doubtful accounts represent amounts written off against the allowance, less recoveries.
Finited-lived intangible assets schedule of weighted average useful lives
 
Weighted Average
Useful Life (years)
Purchased technology
5
Customer contracts and relationships
9
Trademarks
8
Acquired rights to use technology
9
Localization
1
Other intangibles
5