EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended			6 Months Ended		0 Months Ended	6 Months Ended
	Apr. 24, 2012	Feb. 29, 2012	Aug. 01, 2011	Jun. 30, 2012	Jun. 30, 2011	Aug. 01, 2012 Subsequent Event [Member] Dividend Declared [Member]	Jun. 30, 2012 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2012 Stock Options [Member]
Equity [Line Items]
Common dividends, declared	$ 0.33	$ 0.33		$ 0.66	$ 0.32	$ 0.33
Stock issuance, Shares			11,700,000
Stock issuance, Value			$ 163,900	$ 144	$ 547
Shares sold to underwriters (in shares)			1,500,000
Purchase price per share sold to underwriters (USD per share)			$ 14.75
Stock-based compensation, issued during period (in shares)							117,890	41,640