Loans and Other Lending Investments, net (Details 2) (USD $)	Jun. 30, 2012		Mar. 31, 2012	Dec. 31, 2011		Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Loans
Individually Evaluated for Impairment	$ 1,278,305,000	[1]		$ 1,525,337,000	[1]
Collectively Evaluated for Impairment	1,523,578,000	[2]		1,919,876,000	[2]
Loans Acquired with Deteriorated Credit Quality	57,461,000	[3]		59,648,000	[3]
Total	2,859,344,000			3,504,861,000
Less: Reserve for loan losses
Individually Evaluated for Impairment	(487,645,000)	[1]		(554,131,000)	[1]
Collectively Evaluated for Impairment	(56,800,000)	[2]		(73,500,000)	[2]
Loans Acquired with Deteriorated Credit Quality	(19,341,000)	[3]		(18,993,000)	[3]
Total	(563,786,000)		(567,179,000)	(646,624,000)		(701,228,000)	(804,070,000)	(814,625,000)
Total
Individually Evaluated for Impairment	790,660,000	[1]		971,206,000	[1]
Collectively Evaluated for Impairment	1,466,778,000	[2]		1,846,376,000	[2]
Loans Acquired with Deteriorated Credit Quality	38,120,000	[3]		40,655,000	[3]
Total	2,295,558,000			2,858,237,000
Unamortized discounts, premiums, deferred fees and costs, individually evaluated for impairment, net premium (discount)	1,300,000			100,000
Unamortized discounts, premiums, deferred fees and costs, collectively evaluated for impairment, net premium (discount)	2,100,000			200,000
Unamortized discounts, premiums, deferred fees and costs, loans acquired with deteriorated credit quality, net premium (discount)	100,000			15,000,000
Cumulative principal balances of loans acquired with deteriorated credit quality	$ 57,700,000			$ 74,500,000

[1] The carrying value of these loans include unamortized discounts, premiums, deferred fees and costs aggregating to a net discount of $1.3 million and a net premium of $0.1 million as of June 30, 2012 and December 31, 2011, 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 $2.1 million and $0.2 million as of June 30, 2012 and December 31, 2011, respectively.

[3] The carrying value of these loans include unamortized discounts, premiums, deferred fees and costs aggregating to a net premium of $0.1 million and a net discount of $15.0 million as of June 30, 2012 and December 31, 2011. These loans had cumulative principal balances of $57.7 million and $74.5 million, as of June 30, 2012 and December 31, 2011, respectively.