Share Capital (Common Stock Transactions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Share Capital [Abstract]
Shares sold or issued as restricted stock, Shares	23,205,022	40,793,670
Shares issued in reinvestment of distributions, Shares	1,095	654
Shares canceled	(3,917)
Net increase, Shares	23,202,200	40,794,324
Shares sold or issued as restricted stock, Amount	$ 281,184,948	$ 490,401,411
Shares issued in reinvestment of distributions, Amount	13,561	8,624
Shares canceled, Amount	(37,297)
Net increase, Amount	$ 281,161,212	$ 490,410,035