v3.8.0.1
BUSINESS COMBINATIONS - Accrued Restructuring (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Restructuring Reserve [Abstract]    
Restructuring charges, beginning balance $ 16,086 $ 650
Increase in Restructuring Charges 1,481 15,005
Payments for Restructuring (6,346) (664)
Restructuring Charges Assumed in Merger 0 1,095
Restructuring charges, ending balance 11,221 16,086
RestructuringReserveNoncurrent (2,926) (4,413)
Restructuring Reserve Current $ 8,295 $ 11,673