Common Stock (Details) (USD $)	1 Months Ended	3 Months Ended		3 Months Ended		51 Months Ended	54 Months Ended
	Sep. 30, 2010	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Unfunded request	Mar. 31, 2014 Approved request	Dec. 31, 2013 Approved request	Mar. 31, 2014 Approved request		Mar. 31, 2014 Common stock	Dec. 31, 2013 Common stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)		175,614,861	174,120,408						175,614,861	174,120,408
Dividends declared (in dollars per share)	$ 0.605	$ 0.605
Dividends declared per day (in dollars per share)	$ 0.0016575342
Number of Requests				1	1	35	36	[1]
Number of Shares Repurchased					5,000	279,594	284,594	[1]
Average Price per Share (in dollars per share)				$ 10.00	$ 10.00	$ 9.63	$ 9.63	[1]
Remaining shares to be repurchased (in shares)				5,000

[1] Includes one unfulfilled repurchase request consisting of 5,000 shares at a price per share of $10.00, which were approved for repurchase as of March 31, 2014 and paid in May 2014. This liability is included in accounts payable and accrued expenses on the Company's consolidated balance sheets.