XML 61 R50.htm IDEA: XBRL DOCUMENT v3.7.0.1
ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Receivables [Abstract]    
Accounts Receivable, Gross $ 223,005 $ 182,728
Allowance for Doubtful Accounts Receivable 3,081 3,344
Accounts Receivable, Net $ 219,924 $ 179,384