Annual report pursuant to Section 13 and 15(d)

LEASE AGREEMENTS - Rent Expense (Details)

v3.8.0.1
LEASE AGREEMENTS - Rent Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
LEASE AGREEMENTS      
Rent expense under operating lease $ 6.9 $ 8.3 $ 8.9