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Prepaid Expenses and Other Assets, Net (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016
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Prepaid Expense and Other Assets [Abstract] |  |  |  |
Lease incentives, net | $ 18,376 | $ 19,011 |  |
Prepaid expenses | 12,173 | 24,670 |  |
Interest rate derivatives | 9,792 | 3,073 |  |
Furniture, fixtures and equipment, net | 6,407 | 5,256 |  |
Non-real estate equity investments | 5,076 | 5,056 |  |
Marketable securities in deferred compensation plan | 4,194 | 4,616 |  |
Construction contract costs incurred in excess of billings | 4,158 | 4,884 |  |
Restricted cash | 4,105 | 2,570 | $ 2,721 | $ 2,756
Deferred tax asset, net | 1,774 | 1,892 |  |
Other assets | 4,808 | 3,379 |  |
Prepaid expenses and other assets, net | 70,863 | 74,407 |  |
Taxable REIT Subsidiary |  |  |  |
Mortgage and Other Investing Receivables [Line Items] |  |  |  |
Deferred tax assets, valuation allowance | $ 1,400 | $ 1,400 |  |

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- Definition This item represents the deferred charge for an incentive or inducement granted by a lessor to a lessee, in order to motivate the lessee to enter the lease agreement, which incentive or inducement is to be recognized as a reduction of rental revenue over the lease term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e40010-112707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e40019-112707 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: 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(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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(14)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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