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Real Estate (Tables) | 6 Months Ended
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Jun. 30, 2018
Real Estate [Abstract] |
Classification of Investment Property Leases | The following outlines key information for NNN’s leases:
| June 30, 2018
Lease classification: |
Operating | 2,856 |
Direct financing | 7 |
Building portion – direct financing/land portion – operating | 2 |
Weighted average remaining lease term (years) | 11.5 |
Summary of Real Estate Subject to Operating Leases | Real estate subject to operating leases consisted of the following as of (dollars in thousands):
| June 30, 2018 |  | December 31, 2017
Land and improvements(1) | $ | 2,316,395 |  |  | $ | 2,287,100 |
Buildings and improvements | 5,152,418 |  |  | 4,962,530 |
Leasehold interests | 3,971 |  |  | 5,261 |
| 7,472,784 |  |  | 7,254,891 |
Less accumulated depreciation and amortization | (945,626 | ) |  | (878,111 | )
| 6,527,158 |  |  | 6,376,780 |
Work in progress for buildings and improvements | 82,210 |  |  | 41,920 |
| $ | 6,609,368 |  |  | $ | 6,418,700 |
(1) Includes $27,203 and $25,799 in land for Properties under construction at June 30, 2018 and December 31, 2017, respectively.
Disclosure of Long Lived Assets Held-for-sale | Real estate held for sale consisted of the following as of (dollars in thousands):
| June 30, 2018 |  | December 31, 2017
Land and improvements | $ | 4,424 |  |  | $ | 5,229 |
Building and improvements | 11,098 |  |  | 12,956 |
| 15,522 |  |  | 18,185 |
Less accumulated depreciation and amortization | (2,798 | ) |  | (3,010 | )
Less impairment | (2,261 | ) |  | (864 | )
| $ | 10,463 |  |  | $ | 14,311 |
Disclosure of Long Lived Assets Held-for-sale, Gains Recognized | The following table summarizes the Properties sold and the corresponding gain recognized on the disposition of Properties (dollars in thousands):
| Quarter Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
# of Sold Properties |  | Gain |  | # of Sold Properties |  | Gain |  | # of Sold Properties |  | Gain |  | # of Sold Properties |  | Gain
Gain on disposition of real estate | 13 |  | $ | 4,106 |  |  | 8 |  | $ | 3,055 |  |  | 28 |  | $ | 42,702 |  | (1) | 25 |  | $ | 17,679 |
(1) Amount includes the recognition of a deferred gain related to a leasehold interest that was fully amortized in 2018.
Real Estate Funding Commitments | These construction commitments, as of June 30, 2018, are outlined in the table below (dollars in thousands):
Total commitment(1) | $ | 134,726 |
Less amount funded | 109,413 |
Remaining commitment | $ | 25,313 |
(1) Includes land, construction costs, tenant improvements, lease costs and capitalized interest.

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- Definition Tabular disclosure of long lived assets held for sale. Disclosure may include the description of the facts and circumstances leading to the expected disposal, manner and timing of disposal, the carrying value of the assets held for sale, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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- Definition Tabular disclosure of lessor's property under leasing agreements and property available for lease (not currently under lease) by property class, the gross amount, accumulated depreciation and net amount of as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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