SUMMARY OF PERFORMANCE-BASED AWARDS (Details) (Performance-based Awards [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Jun. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Performance-based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested (in shares)	46,500		46,500		0
Granted (in shares)	0	0	46,804	0
Vested (in shares)			0
Forfeited (in shares)			(304)
Unvested, Weighted Average Fair Value (in dollars per share)	$ 75.72		$ 75.72		$ 0.00
Granted, Weighted Average Fair Value (in dollars per share)			$ 75.72
Vested in Period, Weighted Average Fair Value (in dollars per share)			$ 0.00
Forfeited in Period, Weighted Average Fair Value (in dollars per share)	$ 75.72		$ 75.72