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Accounts Receivable and Other Receivables
 12 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Accounts Receivable and Other Receivables
Accounts Receivable and Other Receivables

Accounts receivable balances consisted of the following (in thousands):
 
December 31,
2014
 
December 31,
2013
Accounts receivable, gross
$
43,969

 
$
41,707

Less: allowance for doubtful accounts
(124
)
 
(348
)
Accounts receivable, net
$
43,845

 
$
41,359



Accounts receivable at December 31, 2014 and 2013 consisted of sales to the Company’s customers which are generally based on standard terms and conditions. The Company recorded the following activity in allowance for doubtful accounts (in thousands):
 
For the Years Ended
December 31,
2014
 
2013
 
2012
Allowance for doubtful accounts, beginning of the year
$
348

 
$
779

 
$
828

Charged to costs and expenses
(75
)
 
(310
)
 
—

Less: write-offs, net of recoveries
(149
)
 
(121
)
 
(49
)
Remaining allowance, end of the year
$
124

 
$
348

 
$
779



As of December 31, 2014 and 2013, other receivables were $6.3 million and $2.6 million. Other receivables consisted primarily of non-trade receivables including inventory transferred to the Company’s contract manufacturing partner on which the Company does not recognize revenue and receivables for value-added taxes.