OTHER ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Payroll and other compensation expenses	$ 52,841	$ 38,214
Insurance accruals	14,347	13,896
Property, sales and other non-income related taxes	5,638	5,599
Lease commitments	720	2,119
Deferred revenue	7,506	3,433
Accrued commission	1,691	1,355
Accrued interest	2,742	603
Volume discount	984	1,067
Contingent consideration	0	2,103
Professional fees	1,693	1,530
Other	11,054	9,985
Total	$ 99,216	$ 79,904