ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Accrued Expenses) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued Liabilities, Current [Abstract]
Accrued compensation	$ 108,268	$ 85,970
Accrued commissions	6,296	5,189
Accrued interest	9,894	9,817
Accrued insurance	7,015	7,521
Other Accrued Liabilities, Current	18,933	21,742
Accrued expenses	$ 150,406	$ 130,239