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Real Estate Dispositions, Held for Sale and Impairment Charges - Components of Income from Real Estate and Related Assets Held for Sale (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 USD ($) property | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) property | Jun. 30, 2016 USD ($)
Real Estate Properties [Line Items] |  |  |  |
Operating expense | $ 14,357 | $ 13,433 | $ 32,062 | $ 26,688
(Loss) gain on sale of real estate, net | (1,914) | 0 | $ 3,992 | 0
Number of properties sold | property |  |  | 3 |
Impairment charge | 253 | 187 | $ 3,999 | 230
Assets disposed of by sale |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Operating revenue | 803 | 645 | 1,280 | 1,290
Operating expense | 75 | 199 | 1,491 | 413
Other (expense) income, net | (1,914) | (90) | 3,830 | (218)
Income (loss) from real estate and related assets sold | (1,186) | 356 | 3,619 | 659
Rental income | $ 600 |  | $ 600 |
Number of properties sold | property | 1 |  | 1 |
(Loss) gain on sale of real estate, net | $ (1,900) |  | $ 3,992 |
Number of properties sold | property | 2 |  | 3 |
Impairment charge |  |  | $ 1,308 |
Held for sale |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Operating revenue | $ 0 | 0 | 0 | 0
Operating expense | 345 | 109 | 2,924 | 251
Other (expense) income, net | 0 | 240 | 0 | 148
Income (loss) from real estate and related assets sold | (345) | 131 | (2,924) | (103)
(Loss) gain on sale of real estate, net | (1,800) |  | (1,800) |
Legal settlement income |  | $ 300 |  | $ 300
Impairment charge | $ 300 |  | $ 2,700 |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Definition Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919372-209981 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 6A -URI http://asc.fasb.org/extlink&oid=84173487&loc=SL77927221-108306 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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