XML 36 R22.htm IDEA: XBRL DOCUMENT v3.7.0.1
Accounts Receivable (Tables)
 6 Months Ended
Jun. 30, 2017
Receivables [Abstract]  
Schedule of accounts receivable
Accounts receivable consist of the following at June 30, 2017 and December 31, 2016:
(in thousands)
June 30, 
 2017
 
December 31, 
 2016
Trade receivables
$
382,183

 
$
323,725

Allowance for doubtful accounts
(4,255
)
 
(4,162
)
Other allowances
(7,334
)
 
(6,259
)
 
$
370,594

 
$
313,304