Other Assets (Real Estate Owned - Activity) (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) property	Sep. 30, 2018 USD ($) property	Sep. 30, 2019 USD ($) property	Sep. 30, 2018 USD ($) property	Dec. 31, 2018 property
Real Estate Owned [Roll Forward]
Balance at beginning of period			$ 249,413	$ 152,356
Adjustments to record at lower of cost or fair value	$ (3,875)	$ (4,056)	(9,264)	(11,592)
Transfer from residential whole loans	61,888	58,051	193,531	161,572
Purchases and capital improvements, net	5,108	4,897	16,307	10,179
Disposals	(20,990)	(27,949)	(73,787)	(89,410)
Balance at end of period	$ 376,200	$ 223,105	$ 376,200	$ 223,105
Number of properties \| property	1,508	979	1,508	979	1,093
Gain recorded on transfer from residential whole loans to real estate owned	$ 5,000	$ 5,800	$ 16,100	$ 17,000
Properties sold during period \| property	142	157	431	537
Proceeds from sale of real estate	$ 23,000	$ 29,900	$ 80,000	$ 96,000
Gain on sales of real estate owned	$ 2,100	$ 2,000	$ 5,785	$ 6,582

Gain recorded on transfer from residential whole loans to real estate owned

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- Definition

Number of Real Estate Properties Sold During Period

+ References

No definition available.

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- Definition

Real Estate Investments, Additions

+ References

No definition available.

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- Definition

Real Estate Investments, Disposals

+ References

No definition available.

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- Definition

The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.14(d))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

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.

+ Details

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- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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- Definition

Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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- Definition

Amount of the valuation allowance for real estate owned that was applied in the period against the carrying amount of real estate owned that was sold, written down or written off.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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