Fair Value of Financial Instruments (Reconciliation of Instrument with Unobservable Inputs) (Details) (Fair Value, Inputs, Level 3 [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending balance
Fair Value, Assets (Liabilities), Net Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	43,847	0
Fair value at purchase/issuance	147,591	42,038
Dispositions	(158,637)	(278)
Changes in fair value included in net loss	(10,302)	2,087
Unrealized gain included in other comprehensive income, net	8,731
Principal payments received	(3,505)
Amortization included in net loss	277
Payment	(314)
Redemption of Series D	30,330
Ending balance	58,646	43,847
Commercial Mortgage Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	60,583	0
Fair value at purchase/issuance	151,197	60,730
Dispositions	(158,637)	(278)
Changes in fair value included in net loss	0	131
Unrealized gain included in other comprehensive income, net	8,731
Principal payments received	3,505
Amortization included in net loss	277
Payment	0
Redemption of Series D	0
Ending balance	58,646	60,583
Series D Preferred Stock Embedded Derivative [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	16,736	0
Fair value at purchase/issuance	0	18,692
Dispositions		0
Changes in fair value included in net loss	(13,594)	1,956
Unrealized gain included in other comprehensive income, net	0
Principal payments received	0
Amortization included in net loss	0
Payment	0
Redemption of Series D	30,330
Ending balance	0	16,736
Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Fair value at purchase/issuance	3,606	0
Dispositions	0	0
Changes in fair value included in net loss	3,292	0
Unrealized gain included in other comprehensive income, net	0
Principal payments received	0
Amortization included in net loss	0
Payment	314
Redemption of Series D	0
Ending balance	$ 0	$ 0

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization Included in Earnings

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Amortization Included in Earnings

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Gain (Loss) Included in Earnings

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Gain (Loss) Included in Other Comprehensive Income (Loss)

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Return Of Principal

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Sales

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Assets (Liability), Redemptions

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Assets, Redemptions

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Amortization Included in Earnings

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases And Issuances

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Redemptions

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Return Of Principal

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- Definition

Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Name Accounting Standards Codification

-Topic 820

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sales of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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