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Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Below market leases, gross | $ (66,138) | $ (48,241) |
Below market leases, accumulated amortization | 26,141 | 21,471 |
Amortization of intangible assets | 19,100 | 20,700 | $ 19,400
Amortization related to below-market lease | 5,100 | 4,100 | 2,800
Lease Intangibles |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 259,018 | 259,300 |
Finite-lived intangible assets, accumulated amortization | (147,396) | (144,806) |
In-place Leases |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 104,394 | 105,891 |
Finite-lived intangible assets, accumulated amortization | (63,240) | (62,604) |
Leasing Costs |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 85,038 | 81,487 |
Finite-lived intangible assets, accumulated amortization | (45,501) | (43,982) |
Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 69,586 | 71,922 |
Finite-lived intangible assets, accumulated amortization | (38,655) | (38,220) |
Above Market Leases |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 15,371 | 15,538 |
Finite-lived intangible assets, accumulated amortization | (11,909) | (11,520) |
Amortization of intangible assets | $ 800 | $ 800 | $ 800

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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 https://asc.fasb.org/extlink&oid=126954810&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 https://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 https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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