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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Jan. 01, 2018 | Dec. 31, 2017
Significant Accounting Policies [Line Items] |  |  |  |
Intangible assets and goodwill | $ 12,100 |  |  | $ 12,100
Intangible assets | 4,300 |  |  | 4,300
Goodwill | 7,800 |  |  | 7,800
Accumulated amortization of identified intangible assets | 2,900 |  |  | 2,900
Cash and cash equivalents, restricted cash | 5,300 |  |  | 5,300
Deferred financing costs, net | 24,700 |  |  | 23,700
Proceeds from insurance claims, operating activities | 3,031 | $ 4,625 |  |
Proceeds from insurance claims, investing activities | 265 | 458 |  |
Reported Value Measurement |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Mortgage notes payable fair value | 2,263,600 |  |  | 2,193,700
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Mortgage notes payable fair value | 2,239,200 |  |  | 2,184,000
Leases, Acquired-in-Place |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Intangible assets | 79,700 |  |  | 76,700
Accumulated amortization of identified intangible assets | 76,600 |  |  | $ 76,500
Accounting Standard Update 2017-01 |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Capitalized transaction costs | $ 1,000 |  |  |
Accounting Standard Update 2016-15 |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Proceeds from insurance claims, operating activities |  | (500) |  |
Proceeds from insurance claims, investing activities |  | $ 500 |  |
Accounting Standards Update 2014-09 |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Retained Earnings |  |  | $ (15,200) |

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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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