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Real Estate (Schedule of Real Estate Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Real Estate Properties [Line Items] |  |
Accrued Interest and Operating Lease Income Receivable Net | $ 11,254 | $ 15,773
Real estate, net | 1,387,274 | 1,490,775
Real estate available and held for sale | 237,531 | 286,115
Total real estate | 1,624,805 | 1,776,890
Deferred expenses and other assets, net | 162,112 | 142,484
Deferred operating lease income receivable, net | 88,189 | 93,424
Net Lease |  |
Real Estate Properties [Line Items] |  |
Land, at cost | 231,506 | 268,927
Buildings and improvements, at cost | 987,050 | 1,059,183
Less: accumulated depreciation | (307,444) | (318,839)
Real estate, net | 911,112 | 1,009,271
Real estate available and held for sale | 155,051 | 148,841
Total real estate | 1,066,163 | 1,158,112
Operating Properties |  |
Real Estate Properties [Line Items] |  |
Land, at cost | 211,054 | 133,275
Buildings and improvements, at cost | 311,283 | 427,371
Less: accumulated depreciation | (46,175) | (79,142)
Real estate, net | 476,162 | 481,504
Real estate available and held for sale | 82,480 | 137,274
Total real estate | 558,642 | 618,778
Real Estate Properties |  |
Real Estate Properties [Line Items] |  |
Land, at cost | 442,560 | 402,202
Buildings and improvements, at cost | 1,298,333 | 1,486,554
Less: accumulated depreciation | (353,619) | (397,981)
Real estate, net | 1,387,274 | 1,490,775
Real estate available and held for sale | 237,531 | 286,115
Total real estate | 1,624,805 | 1,776,890
Residential Operating Properties |  |
Real Estate Properties [Line Items] |  |
Real estate available and held for sale | 82,500 | 137,300
Ground Net Lease Business |  |
Real Estate Properties [Line Items] |  |
Accrued Interest and Operating Lease Income Receivable Net | 3,500 | 2,700
Real estate, net | 104,500 | 103,200
Deferred expenses and other assets, net | 37,500 | 39,000
Deferred operating lease income receivable, net | $ 8,200 | $ 4,000

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- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity. + References No definition available. + Details
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- Definition The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77913719&loc=d3e40879-112712 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39927-112707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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