OTHER NON-CURRENT LIABILITIES (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities, Noncurrent [Abstract]
Accrued employee benefit liabilities	$ 42,643	$ 44,364
Accrued environmental remediation liabilities	38,832	39,993
Deferred consideration	23,392	16,131
Liability related to investment tax credit	0	17,720
Unfavorable storage contracts	0	5,979
ARO	5,463	2,596
Derivative liabilities	703	2,620
Other	4,374	5,148
Total other non-current liabilities	$ 115,407	$ 134,551