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ACCOUNTS RECEIVABLE RESERVES
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
ACCOUNTS RECEIVABLE RESERVES
ACCOUNTS RECEIVABLE RESERVES
 
The Company records a provision for uncollectible commissions and chargebacks related to disputed credit card payments. Changes in accounts receivable reserves consisted of the following (in thousands):
 
 
For the Year Ended December 31,
 
2017
 
2016
 
2015
Balance, beginning of year
$
25,565

 
$
15,014

 
$
14,212

Provision charged to expense
62,316

 
46,241

 
24,324

Charge-offs and adjustments
(51,652
)
 
(35,233
)
 
(22,682
)
Currency translation adjustments
3,053

 
(457
)
 
(840
)
Balance, end of year
$
39,282

 
$
25,565

 
$
15,014