COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) (USD $)	1 Months Ended	6 Months Ended			6 Months Ended		1 Months Ended	6 Months Ended	0 Months Ended
	Sep. 30, 2003 Parties	Jun. 30, 2014 Cases	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Initial [Member] Marketing, Lukoil and Getty Realty Settlement [Member]	Jun. 30, 2014 Subsequent [Member]	May 31, 2007 NJ MTBE [Member] Defendant	Jun. 30, 2014 NJ MTBE [Member] Defendant	Jun. 19, 2014 Pennsylvania MTBE [Member] Minimum [Member] Defendant
Loss Contingencies [Line Items]
Accrued legal matters		$ 11,100,000		$ 11,423,000
Provisions for litigation losses		35,000	406,000
Number of potentially responsible parties for Lower Passaic River damages	66
Parties to perform a remedial investigation and feasibility study							70
Number of defendants in the MTBE complaint								50	50
Number of cases in which we remain a defendant		1
Settlement amounts sought by the plaintiffs					$ 88,000,000	$ 24,000,000