NONCONTROLLING INTEREST IN OPERATING PARTNERSHIP (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Noncontrolling interest in operating partnership
Period used as a denomination to determine the average closing price of common stock	10 days
Common OP units conversion basis	one-for-one basis
Ten day average closing stock price (in dollars per share)	$ 46.02
Consideration to be paid on redemption of common OP units	$ 200,031
Operating Partnership
Noncontrolling interest in operating partnership
Ownership interest held by entity (as a percent)	94.30%
Noncontrolling interest in operating partnership (as a percent)	5.70%
Common OP units outstanding (in shares)	4,346,618