XML 25 R50.htm IDEA: XBRL DOCUMENT v2.4.0.6
Selected Quarterly Financial Data (unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Selected Quarterly Financial Data (unaudited)                      
Revenues $ 194,164 $ 158,633 $ 146,972 $ 145,073 $ 136,603 $ 113,700 $ 101,162 $ 98,552 $ 644,842 $ 450,017 $ 340,113
Net income $ 44,636 $ 25,646 $ 33,251 $ 32,352 $ 38,599 $ 29,996 $ 51,048 $ 31,776 $ 135,884 $ 151,419 $ 116,485
Per share data:                      
Net income (in dollars per share) $ 0.25 $ 0.15 $ 0.20 $ 0.20 $ 0.24 $ 0.20 $ 0.36 $ 0.22      
Common distributions declared (in dollars per share) $ 0.39 $ 0.39 $ 0.38 $ 0.38 $ 0.38 $ 0.38 $ 0.37 $ 0.37