Income Taxes - Income Tax Treatment for Dividends (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income tax treatment for dividends to stockholders [Abstract]
Ordinary income (in dollars per share)	$ 0.7141	$ 0.4425	$ 0
Capital gain (in dollars per share)	$ 0.0359	$ 0	$ 0
Unrecaptured Section 1250 gain (in dollars per share)	$ 0	$ 0.0831	$ 0
Return of capital (in dollars per share)	$ 0	$ 0.1119	$ 0.375
Distributions paid per common share (in dollars per share)	$ 0.75	$ 0.6375	$ 0.375
Ordinary income (percent)	95.20%	69.40%	0.00%
Capital gain (percent)	4.80%	0.00%	0.00%
Unrecaptured Section 1250 gain (percent)	0.00%	13.00%	0.00%
Return of capital (percent)	0.00%	17.60%	100.00%
Distributions per common share (percent)	100.00%	100.00%	100.00%

The percentage of the aggregate dividends paid during the period for each share of common stock outstanding.

No definition available.

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- Definition

Common Stock, Dividends, Cash Paid, Percentage on Capital Gain

+ References

No definition available.

+ Details

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- Definition

The percentage of the aggregate dividends paid during the period for each share of common stock outstanding on ordinary income.

+ References

No definition available.

+ Details

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- Definition

The percentage of the aggregate dividends paid during the period for each share of common stock outstanding on return of capital.

+ References

No definition available.

+ Details

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- Definition

The percentage of the aggregate dividends paid during the period for each share of common stock outstanding on unrecaptured section 1250 gain.

+ References

No definition available.

+ Details

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- Definition

Common Stock, Dividends, Per Share, Cash Paid on Capital Gain

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding on ordinary income.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding on return of capital.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding on unrecaptured section 1250 gain.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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