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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
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3 Months Ended | 9 Months Ended | |||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
Segment
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Sep. 30, 2013
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Dec. 31, 2013
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Financing receivable, past due | 90 days | ||||
| Cash and cash equivalents original maturity period | 3 months | ||||
| Real estate investment description | To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we currently distribute at least 90% of our net taxable income, excluding capital gains, to our shareholders. | ||||
| Income tax examination, description | We have no examinations in progress, none are expected at this time, and years 2010 through 2013 are open. | ||||
| Uncertain tax positions | $ 0 | $ 0 | $ 0 | ||
| Accrued interest and penalties | 0 | 0 | 0 | ||
| Interest and penalties recognized during the year | 0 | 0 | 0 | 0 | |
| Number of segment reported | 1 | ||||
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2013 Plan [Member] | Performance Based Restricted Stock Award [Member]
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Estimated vesting percentage | 100.00% | 100.00% | |||
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Prior To IPO [Member] | Federal or State Income Taxes [Member]
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Provision for income taxes | $ 0 | ||||
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Minimum [Member]
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Percentage of taxable income distributed to stockholders | 90.00% | ||||
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Minimum [Member] | 2013 Plan [Member] | Performance Based Restricted Stock Award [Member]
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Stock-based award vesting percentage | 0.00% | ||||
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Maximum [Member] | 2013 Plan [Member] | Performance Based Restricted Stock Award [Member]
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| Summary Of Significant Accounting Policies [Line Items] | |||||
| Stock-based award vesting percentage | 150.00% | ||||