STOCK-BASED COMPENSATION PLANS (Tables)

3 Months Ended

Mar. 31, 2013

STOCK-BASED COMPENSATION PLANS

Summary of compensation expense related to stock-based compensation plans

	Three Months Ended March 31,
	2013		2012
Stock options - Property management and other costs	$	1,229	$	933
Stock options - General and administrative	2,000		1,164
Restricted stock - Property management and other costs	426		582
Restricted stock - General and administrative	1,809		2,550
Total	$	5,464	$	5,229

Summary of stock option activity

	2013				2012
			Weighted				Weighted
			Average				Average
			Exercise				Exercise
	Shares		Price		Shares		Price
Stock options Outstanding at January 1	9,692,499		$	13.59	11,503,869		$	15.65
Granted	5,901,108		19.24		—		—
Exercised	(208,587	)	14.19		(1,200	)	14.17
Forfeited	(70,811	)	15.28		(140,042	)	14.78
Expired	(1,759	)	14.17		(499,088	)	46.39
Stock options Outstanding at March 31	15,312,450		$	15.75	10,863,539		$	13.66