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Mortgage Notes Payable and Credit Facility - Company's Mortgage Notes Payable and Line of Credit Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2017 mortgage property
Debt Instrument [Line Items] |
Weighted average interest rate on debt outstanding (as percent) | 4.52%
Encumbered properties | 91
Revolving credit facility |
Debt Instrument [Line Items] |
Encumbered properties | 24
LIBOR |
Debt Instrument [Line Items] |
Variable rate at period end (as percent) | 1.24%
Fixed rate mortgage loans |
Debt Instrument [Line Items] |
Maturity date of mortgage notes payable, start date | Dec. 01, 2017
Maturity date of mortgage notes payable, end date | Jul. 01, 2045
Weighted average interest rate on debt outstanding (as percent) | 6.25%
Encumbered properties | 48
Fixed rate mortgage loans | Minimum |
Debt Instrument [Line Items] |
Stated interest rate (as percent) | 3.545%
Fixed rate mortgage loans | Maximum |
Debt Instrument [Line Items] |
Stated interest rate (as percent) | 6.63%
Variable rate mortgage loans |
Debt Instrument [Line Items] |
Encumbered properties | 19
Variable rate mortgage loans | LIBOR |
Debt Instrument [Line Items] |
Spread on LIBOR (as percent) | 2.15%
Variable rate mortgage loans | Maximum | LIBOR |
Debt Instrument [Line Items] |
Spread on LIBOR (as percent) | 2.75%
Mortgage notes payable |
Debt Instrument [Line Items] |
Number of mortgage notes payable | mortgage | 45
Weighted average interest rate on debt outstanding (as percent) | 4.34%
Encumbered properties | 67
Variable rate revolving credit facility | Revolving credit facility |
Debt Instrument [Line Items] |
Encumbered properties | 24
Variable rate revolving credit facility | LIBOR | Revolving credit facility |
Debt Instrument [Line Items] |
Spread on LIBOR (as percent) | 2.00%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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