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Summary of Disposition of Property's (Parenthetical) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Aventine Greenville |  |  |
Real Estate Properties [Line Items] |  |  |
Gain (loss) for properties, debt prepayment premium costs | $ 911 |  |
Copper Mill |  |  |
Real Estate Properties [Line Items] |  |  |
Gain (loss) on sale related to property includes defeasance costs |  | $ 4,251 |
Cumberland Glen |  |  |
Real Estate Properties [Line Items] |  |  |
Gain (loss) on sale related to property includes defeasance costs |  |  | $ 1,343

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- Definition Gains losses on sales of investment real estate defeasance costs. + References No definition available. + Details
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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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- Details
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- Details
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