STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Share Based Compensation Expense

The table below sets forth the total amount of stock-based compensation expense for the nine months and quarters ended September 30, 2013 and 2012.

	Quarter Ended				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
	(Thousands of dollars)
Stock-based compensation expense:
Time-based restricted stock units	$	120	$	1,560	$	342	$	3,024
Performance-based restricted stock units		558		112		1,335		112