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Accounts Receivable, Net
12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Accounts Receivable, Net
Accounts Receivable, Net

The components of accounts receivable, net are as follows (in thousands):
 
December 31,
 
2017
 
2016
Accounts receivable
$
44,554

 
$
33,406

Allowance for doubtful accounts
(1,449
)
 
(1,282
)
Allowance for product returns
(2,471
)
 
(2,314
)
Accounts receivable, net
$
40,634

 
$
29,810



For the years ended December 31, 2017, 2016 and 2015, we recorded a provision for doubtful accounts of $0.5 million, $0.6 million and $0.3 million, respectively.

For the years ended December 31, 2017, 2016 and 2015, we recorded a $2.1 million, $2.1 million and $1.6 million reserve for product returns in our hardware and other revenue, respectively. Historically, we have not experienced write-offs for uncollectible accounts or sales returns that have differed significantly from our estimates.