Debt - Exchangeable Senior Notes Narrative (Details)		9 Months Ended
Feb. 29, 2016 USD ($) day	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Exchangeable senior notes, net		$ 107,283,000	$ 0
Convertible Debt \| 3.25% Exchangeable Senior Notes
Debt Instrument [Line Items]
Interest rate	3.25%	3.25%
Principal amount	$ 115,000,000.0	$ 115,000,000	0
Fair value of convertible debt	$ 112,300,000
Debt exchange ratio		0.0546381
Current exchange price percentage	98.00%
Minimum trading days \| day	20
Consecutive trading days	5 days
Unamortized discount	$ (2,700,000)	$ (2,134,000)	0
Exchangeable senior notes, net	$ 105,300,000	107,300,000
Straight-debt rate	6.70%
Convertible instrument carrying amount	$ 7,000,000	$ 5,583,000	$ 0
Convertible Debt \| 3.25% Exchangeable Senior Notes \| Minimum
Debt Instrument [Line Items]
Current exchange price percentage	130.00%
Consecutive trading days	30 days
American Residential Properties Inc. \| Convertible Debt \| 3.25% Exchangeable Senior Notes
Debt Instrument [Line Items]
Debt exchange ratio	0.0469423
Adjusted debt exchange ratio	0.0532795
Ownership units exchange ratio	1.135

Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Multiplier

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- Definition

Debt Instrument, Convertible, Conversion Ratio, Adjusted

+ References

No definition available.

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- Definition

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
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-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Convertible Security
-URI http://asc.fasb.org/extlink&oid=6509036

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Subparagraph (SX 210.5-02.22(a)(1))
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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.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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