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UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parentheticals) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2014
Jun. 30, 2013
Statement of Changes in Stockholders' Equity (Parenthetical) [Abstract]        
Dividends $ 36,200,000 $ 36,200,000 $ 72,513,000 [1] $ 36,479,000
Payments of Stock Issuance Costs     $ 600,000  
[1] Cash dividends declared in relation to the quarter ended March 31, 2014 amounting to $36.2 million were paid in July 2014.