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Real Estate and Intangible Assets - Carrying Value of Intangible Assets and Accumulated Amortization (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |
Below market leases, gross | $ (38,319) | $ (34,322) |
Below market leases, accumulated amortization | 17,686 | 15,000 |
Amortization of intangible assets | 19,400 | 19,200 | $ 17,700
Amortization related to above-market lease | 52 | 53 | 0
Amortization related to below-market lease | 2,800 | 2,500 | 2,000
Lease Intangibles |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 241,229 | 226,525 |
Finite-lived intangible assets, accumulated amortization | (123,850) | (111,060) |
In-place Leases |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 99,254 | 92,906 |
Finite-lived intangible assets, accumulated amortization | (54,168) | (48,468) |
Leasing Costs |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 73,707 | 68,256 |
Finite-lived intangible assets, accumulated amortization | (37,801) | (33,705) |
Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 68,268 | 65,363 |
Finite-lived intangible assets, accumulated amortization | (31,881) | (28,887) |
Above and Below Market Leases |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible liabilities, gross | (23,243) | (17,820) |
Finite-lived intangible liabilities, accumulated amortization | 7,016 | 4,995 |
Above Market Leases |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 15,076 | 16,502 |
Finite-lived intangible assets, accumulated amortization | (10,670) | (10,005) |
Amortization related to above-market lease | $ 800 | $ 1,100 |
Amortization related to above-market lease |  |  | $ 1,100

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- Definition Finite lived intangible assets (liabilities) accumulated amortization. + References No definition available. + Details
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- Definition Finite lived intangible assets (liabilities) gross. + References No definition available. + Details
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- Definition Operating Lease, Right-of-Use Asset, Amortization + References No definition available. + Details
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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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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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