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Mortgage Notes Payable and Credit Facility - Mortgages Notes Payable (Detail) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016
Debt Instrument [Line Items] |  |
Aggregate debt repaid | $ 40,573 | $ 51,977
Weighted average interest rate on debt repaid (as percent) | 4.65% |
Fixed rate mortgage loans |  |
Debt Instrument [Line Items] |  |
Aggregate debt repaid | $ 27,188 |
Weighted average interest rate on debt repaid (as percent) | 6.05% |
Variable rate mortgage loans |  |
Debt Instrument [Line Items] |  |
Aggregate debt repaid | $ 8,163 |
Variable rate mortgage loans | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread (as percent) | 2.15% |
Variable rate mortgage loans | LIBOR | Weighted average |  |
Debt Instrument [Line Items] |  |
Basis spread (as percent) | 2.50% |
Aggregate Fixed Rate |  |
Debt Instrument [Line Items] |  |
Aggregate Fixed Rate Debt Issued or Assumed | $ 11,179 |
Weighted average interest rate on debt repaid (as percent) | 3.55% |
Aggregate Variable Rate |  |
Debt Instrument [Line Items] |  |
Aggregate Variable Rate Debt Issued or Assumed | $ 6,700 |
Aggregate Variable Rate | LIBOR | Weighted average |  |
Debt Instrument [Line Items] |  |
Basis spread (as percent) | 2.75% |

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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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 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + 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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- Definition The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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