Equity Non-controlling interest (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Noncontrolling Interest [Line Items]
Issuance of non-controlling interest in subsidiaries	$ 22	$ 6,709	$ 16,190
Noncontrolling Interset, Decrease from redemption of OP units	(10,816)	0	0
Change in non-controlling interest	(10,838)	6,709	16,190
Gaea
Noncontrolling Interest [Line Items]
Issuance of non-controlling interest in subsidiaries	0	24	0
Noncontrolling Interest, Decrease from Deconsolidation	(22)	0	0
Ajax Mortgage Loan Trust 2017-D
Noncontrolling Interest [Line Items]
Issuance of non-controlling interest in subsidiaries	0	0	13,793
Ajax Mortgage Loan Trust 2018-C
Noncontrolling Interest [Line Items]
Issuance of non-controlling interest in subsidiaries	0	6,685	0
AS Ajax E II LLC
Noncontrolling Interest [Line Items]
Issuance of non-controlling interest in subsidiaries	$ 0	$ 0	$ 2,397

Change in non-controlling interest

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- Definition

Noncontrolling Interset, Decrease from redemption of OP units

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The amount of the reduction or elimination during the period of a noncontrolling interest resulting from the parent's loss of control and deconsolidation of the entity in which one or more outside parties had a noncontrolling interest.

+ References

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- Definition

Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(2)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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