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Accounts Receivable
 12 Months Ended
Nov. 30, 2018
Receivables [Abstract]  
Accounts Receivable Accounts Receivable
 
The Company’s net accounts receivable was $90.4 million and $112.1 million at November 30, 2019 and 2018, respectively, and are generally unsecured. There was no single customer who represented more than 10% of the Company’s net trade receivables at November 30, 2019 or 2018.

The following table summarizes the Company's allowance for doubtful accounts:
 
November 30,
 
2019
 
2018
 
2017
 
(Dollars in millions)
Balance at beginning of period
$
3.3

 
$
2.9

 
$
0.8

Provision for bad debt
0.9

 
0.6

 
2.1

Write-offs
(0.8
)
 
(0.3
)
 
(0.1
)
Reclassifications
—

 
—

 
—

Currency translation adjustment
—

 
0.1

 
0.1

Balance at end of period
$
3.4

 
$
3.3

 
$
2.9