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Real Estate (Intangible Assets, Lease Liabilities, and Related Amortization) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Intangible lease liabilities (included in other liabilities): |  |  |
Below-market in-place leases | $ 41,077 |  | $ 41,101
Less: accumulated amortization | (26,559) |  | (26,486)
Below-market in-place leases, net | 14,518 |  | 14,615
Above-market in-place leases |  |  |
Intangible lease assets (included in other assets): |  |  |
Leases | 15,408 |  | 15,474
Less: accumulated amortization | (10,327) |  | (10,271)
Leases, net | 5,081 |  | 5,203
In-place leases |  |  |
Intangible lease assets (included in other assets): |  |  |
Leases | 121,486 |  | 118,416
Less: accumulated amortization | (68,986) |  | (68,695)
Leases, net | 52,500 |  | $ 49,721
Intangible lease liabilities (included in other liabilities): |  |  |
Amortization expense, in-place leases | 1,800 | $ 2,395 |
Above-market and below-market in-place leases |  |  |
Intangible lease liabilities (included in other liabilities): |  |  |
Amortization expense, above- and below-market leases | $ 162 | $ 220 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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