XML 83 R70.htm IDEA: XBRL DOCUMENT v3.8.0.1
LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Financing arrangements - Securitization program) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2015
Mar. 31, 2017
Feb. 28, 2017
Dec. 31, 2016
Financing Arrangements            
Borrowings under accounts receivable securitization program   $ 10,000 $ 35,000      
Accounts receivable securitization program            
Financing Arrangements            
Maximum borrowing capacity       $ 125,000 $ 100,000  
Additional borrowing capacity that may be requested       $ 25,000    
Borrowings under accounts receivable securitization program $ 10,000          
Amount outstanding   45,000       $ 35,000
Outstanding letters of credit   17,700       $ 18,000
Remaining borrowing capacity   $ 62,300