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Schedule III: Real Estate and Accumulated Depreciation (Parenthetical) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($) Property | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Number of industrial properties | Property | 458 |  |  |
Tenant improvements, useful life | Lease Term |  |  |
Balance, Beginning of Year | $ 3,495,745 |  | $ 3,388,611 | $ 3,297,649
Acquisition of Real Estate Assets | 162,769 |  | 168,517 | 108,538
Construction Costs and Improvements | 190,383 |  | 137,361 | 167,342
Disposition of Real Estate Assets | (148,408) |  | (170,928) | (153,364)
Impairment of Real Estate | (2,756) |  | 0 | 0
Write-off of Fully Depreciated and Other Assets | (24,089) |  | (27,816) | (31,554)
Balance, End of Year Including Real Estate Held for Sale | 3,673,644 |  | 3,495,745 | 3,388,611
Real Estate Held for Sale | 0 | [1] | 0 | (3,697)
Balance, End of Year Excluding Real Estate Held for Sale | 3,673,644 |  | 3,495,745 | 3,384,914
Balance, Beginning of Year | 789,919 |  | 797,919 | 792,501
Depreciation for Year | 94,626 |  | 94,078 | 95,514
Disposition of Assets | (49,144) |  | (78,844) | (62,634)
Write-off of Fully Depreciated and Other Assets | (23,617) |  | (23,234) | (27,462)
Balance, End of Year Including Real Estate Held for Sale | 811,784 |  | 789,919 | 797,919
Real Estate Held for Sale | 0 | [2] | 0 | (1,427)
Balance, End of Year Excluding Real Estate Held for Sale | $ 811,784 |  | $ 789,919 | $ 796,492
Buildings and Improvements | Minimum |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Property, plant and equipment, useful life | 7 years |  |  |
Buildings and Improvements | Maximum |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Property, plant and equipment, useful life | 50 years |  |  |
Land Improvements | Minimum |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Property, plant and equipment, useful life | 5 years |  |  |
Land Improvements | Maximum |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Property, plant and equipment, useful life | 20 years |  |  |
[1] | The Real Estate Held for Sale at December 31, 2018 excludes $0 of other assets.
[2] | The Real Estate Held for Sale at December 31, 2018 excludes $0 of accumulated amortization related to the other assets mentioned above.

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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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