Loans Receivable and Other Lending Investments, net (Schedule of Investment in Loans) (Details) (USD $)	Sep. 30, 2014		Jun. 30, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Loans
Individually Evaluated for Impairment	$ 211,811,000	[1]		$ 752,425,000	[1]
Collectively Evaluated for Impairment	921,033,000	[2]		849,613,000	[2]
Loans Acquired with Deteriorated Credit Quality	0	[3]		9,889,000	[3]
Total	1,132,844,000			1,611,927,000
Less: Reserve for loan losses
Individually Evaluated for Impairment	(89,107,000)	[1]		(348,004,000)	[1]
Collectively Evaluated for Impairment	(30,800,000)	[2]		(29,200,000)	[2]
Loans Acquired with Deteriorated Credit Quality	0	[3]		0	[3]
Total	(119,907,000)		(137,904,000)	(377,204,000)		(380,007,000)	(479,826,000)	(524,499,000)
Total
Individually Evaluated for Impairment	122,704,000	[1]		404,421,000	[1]
Collectively Evaluated for Impairment	890,233,000	[2]		820,413,000	[2]
Loans Acquired with Deteriorated Credit Quality	0	[3]		9,889,000	[3]
Total	1,012,937,000			1,234,723,000
Unamortized discounts (premiums) deferred fees and costs, individually evaluated for impairment, net premium (discount)	200,000			(500,000)
Unamortized discounts (premiums) deferred fees and costs, collectively evaluated for impairment, net premium (discount)	8,300,000			4,600,000
Unamortized discounts (premiums) deferred fees and costs, loans acquired with deteriorated credit quality, net premium (discount)				(400,000)
Cumulative principal balances of loans acquired with deteriorated credit quality				$ 10,200,000

[1] The carrying value of these loans include unamortized discounts, premiums, deferred fees and costs aggregating to a net discount of $0.2 million and a net premium of $0.5 million as of September 30, 2014 and December 31, 2013, respectively. The Company's loans individually evaluated for impairment primarily represent loans on non-accrual status and therefore, the unamortized amounts associated with these loans are not currently being amortized into income.

[2] The carrying value of these loans include unamortized discounts, premiums, deferred fees and costs aggregating to a net discount of $8.3 million and $4.6 million as of September 30, 2014 and December 31, 2013, respectively.

[3] The carrying value of the loan includes unamortized discounts, premiums, deferred fees and costs aggregating to a net premium of $0.4 million as of December 31, 2013. The loan had a cumulative principal balance of $10.2 million as of December 31, 2013. The loan was repaid during the nine months ended September 30, 2014.