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Discontinued Operations and Disposition of Real Estate and Real Estate Investments - Operating Results Related to Assets Sold (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract] |  |  |
Revenues |  | $ 39,537 | $ 81,241
Expenses |  |  |
Operating expenses |  | 11,070 | 23,204
Impairment charges | $ 0 | 8,877 | 53,553
Interest, net |  | 9,947 | 19,457
Depreciation and amortization |  | 16,254 | 27,568
Total expenses, discontinued operations |  | 46,148 | 123,782
Loss from discontinued operations |  | (6,611) | (42,541)
Gain on disposition of real estate, net of tax |  | 96,009 | 11,274
Income (loss) from discontinued operations | $ 0 | $ 89,398 | $ (31,267)

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- Definition Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721673-107760 + Details
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- Definition Amount after tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721675-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=51716988&loc=SL51721523-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e957-107759 + Details
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