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ACCOUNTS RECEIVABLE RESERVES (Tables)
 12 Months Ended
Dec. 31, 2016
Receivables [Abstract]  
Changes in accounts receivable reserves
Changes in accounts receivable reserves consisted of the following (in thousands):
 
 
For the Year Ended December 31,
 
2016
 
2015
 
2014
Balance, beginning of year
$
15,014

 
$
14,212

 
$
14,116

Provision charged to expense
46,241

 
24,324

 
22,990

Charge-offs and adjustments
(35,233
)
 
(22,682
)
 
(21,546
)
Currency translation adjustments
(457
)
 
(840
)
 
(1,348
)
Balance, end of year
$
25,565

 
$
15,014

 
$
14,212