ACCRUED EXPENSES AND OTHER NON-CURRENT LIABILITIES (Headquarter Relocation) (Details) $ in Millions	12 Months Ended
Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Relocation expenses	$ 5.6
Capital expenditures	1.3
Agreement One \| Maximum
Restructuring Cost and Reserve [Line Items]
Cost of reimbursement expense	$ 8.1

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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