Debt and Preferred Equity Investments (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Preferred equity investment
Aggregate weighted average current yield (as a percent)	11.47%
Senior Financing	$ 5,196,398
Debt and preferred equity investments	1,304,839		1,348,434
Preferred equity investments
Preferred equity investment
Aggregate weighted average current yield (as a percent)	10.91%
Senior Financing	1,577,007
Debt and preferred equity investments	369,364		338,579
Preferred equity with initial mandatory redemption on July, 2015
Preferred equity investment
Senior Financing	525,000	[1]
Debt and preferred equity investments	115,198	[1]	99,768	[1]
Preferred equity with initial mandatory redemption on April, 2016
Preferred equity investment
Senior Financing	55,747	[1],[2]
Debt and preferred equity investments	25,896	[1],[2]	18,925	[1],[2]
Preferred equity with initial mandatory redemption on July, 2016
Preferred equity investment
Senior Financing	926,260	[1]
Debt and preferred equity investments	218,330	[1]	209,959	[1]
Preferred equity with initial mandatory redemption on November 2017
Preferred equity investment
Senior Financing	70,000
Debt and preferred equity investments	$ 9,940		$ 9,927

[1] The difference between the pay and accrual rates is included as an addition to the principal balance outstanding.

[2] As of December 31, 2013, the loan is fully funded.