OTHER ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Payroll and other compensation expenses	$ 42,493	$ 21,878
Insurance accruals	9,619	7,008
Property, sales and other non-income related taxes	4,228	3,058
Deferred revenue	3,175	1,355
Acquisition-related costs	2,924	370
Contingent consideration	2,782	3,638
Lease commitments	2,426	1,721
Accrued commission	1,649	1,159
Accrued interest	1,214	984
Volume discount	728	1,280
Other	10,244	7,345
Total	$ 81,482	$ 49,796