Fair Value Measures (Reconciliation of Instrument with Unobservable Inputs) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Fair Value, Assets (Liabilities), Net Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		$ 43,847
Unrealized gain included in other comprehensive income, net		9,456
Changes in fair value included in net loss		(14,564)
Fair value at purchase/issuance		147,591
Sale of CMBS acquired in the Cole Merger		(151,248)
Reclassification of previous unrealized gains on investment securities into net loss-CMBS		(7,417)
Principal payments received/Return of principal received		(3,678)
Amortization included in net loss		184
Reclassification of contingent consideration to held for sale		4,596
Redemption of Series D		30,310
Ending balance		59,077
CMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 58,646	60,583
Unrealized gain included in other comprehensive income, net	(232)	9,456
Fair value at purchase/issuance		151,197
Sale of CMBS acquired in the Cole Merger		(151,248)
Reclassification of previous unrealized gains on investment securities into net loss-CMBS		(7,417)
Principal payments received/Return of principal received	(4,055)	(3,678)
Amortization included in net loss	96	184
Ending balance	$ 54,455	59,077
Series D Preferred Stock Embedded Derivative [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		(16,736)
Changes in fair value included in net loss		(13,574)
Redemption of Series D		30,310
Ending balance		0
Contingent Consideration Arrangements [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Changes in fair value included in net loss		(990)
Fair value at purchase/issuance		(3,606)
Reclassification of contingent consideration to held for sale		4,596
Ending balance		$ 0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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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

-Paragraph 2

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1a)

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair Value, Assets (Liabilities), Net Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]

+ References

No definition available.

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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), Net, Purchases, Issuances, (Settlements)

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Transfers Out of Level 3

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

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Principal Payments Received

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Reclassification of Unrealized Gain (Loss) to Realized Gain (Loss) in Earnings

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

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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, Asset, Principal Payments Received

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, Issuances, (Settlements)

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, Issuances, (Settlements)

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

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