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REAL ESTATE PROPERTIES - Summary (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) ft² Integer shares | Dec. 31, 2021 USD ($) ft² | Dec. 31, 2020 USD ($) ft²
Real Estate Properties |  |  |  |
Land |  | $ 730,445,000 | $ 544,505,000 |
Buildings and building improvements |  | 3,012,319,000 | 2,408,944,000 |
Tenant and other improvements |  | 633,817,000 | 570,627,000 |
Development and value-add properties | [1] | 538,449,000 | 504,614,000 |
Total real estate properties acquired |  | 4,934,421,000 | 4,051,325,000 |
Less accumulated depreciation |  | 1,150,814,000 | 1,035,617,000 |
Real Estate Investment Property, Net |  | 3,783,607,000 | 3,015,708,000 |
Debt assumed in the purchase of real estate |  | $ 60,000,000 | 0 | $ 0
Maximum occupancy at acquisition date that defines an investment property as value-add |  | 75.00% |  |
Minimum percentage of acquisition cost used in redevelopment costs that defines an investment property as value-add |  | 20.00% |  |
Real estate properties [Member] |  |  |  |
Real Estate Properties |  |  |  |
Right-of-Use Assets - Ground Leases (operating) | [2] | $ 19,391,000 | $ 22,635,000 |
2022 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] | 1,706,000 |  |
Costs | [3],[4] | $ 359,130,000 |  |
2022 Value-Add Property Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] | 1,044,000 |  |
Costs | [4],[5] | $ 122,921,000 |  |
2022 Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [6] | 2,750,000 |  |
Costs | [4],[6] | $ 482,051,000 |  |
2022 Acquisitions | Development land |  |  |  |
Real Estate Properties |  |  |  |
Purchase price |  | $ 123,717,000 |  |
Acres of real estate investment property | ft² |  | 456.3 |  |
Locations of acquired property | Integer |  | 10 |  |
2021 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  | 760,000 |
Costs | [3],[4] |  | $ 108,149,000 |
2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 1,046,000 |
Costs | [4],[5] |  | $ 171,076,000 |
2021 acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [6] |  | 1,806,000 |
Costs | [4],[6] |  | $ 279,225,000 |
2020 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  |  | 347,000
Costs | [3],[4] |  |  | $ 48,656,000
2020 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  |  | 162,000
Costs | [4],[5] |  |  | $ 27,862,000
2020 Acquisitions [Member] |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [6] |  |  | 509,000
Costs | [4],[6] |  |  | $ 76,518,000
Tulloch corporation |  |  |  |
Real Estate Properties |  |  |  |
Number of land parcels acquired | Integer |  | 2 |  |
Debt assumed in the purchase of real estate |  | $ 60,000,000 |  |
Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued | shares |  | 1,868,809 |  |
Fair value of loans assumed, asset acquisition |  | $ 60,000,000 |  |
Other Significant Noncash Transaction, Fair Value of Consideration Given, Common shares issued |  | $ 303,756,000 |  |
Cebrian Distribution Center and Reed Distribution Center | 2022 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3],[7] | 329,000 |  |
Date acquired | [3],[7] | Jun. 01, 2022 |  |
Costs | [3],[4],[7] | $ 49,726,000 |  |
6th Street Bus Cntr, Benicia Distrib Cntr 1-5, Ettie Bus Cntr, Laura Alice Bus Cntr, Preston Distrb Cntr, Sinclair Distrib Cntr, Transit Distrb Cntr and Whipple Bus Cntr | 2022 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3],[7] | 1,377,000 |  |
Date acquired | [3],[7] | Jun. 01, 2022 |  |
Costs | [3],[4],[7] | $ 309,404,000 |  |
Cypress Preserve 1 & 2 | 2022 Value-Add Property Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] | 516,000 |  |
Date acquired | [5] | Mar. 28, 2022 |  |
Costs | [4],[5] | $ 54,462,000 |  |
Zephyr Distribution Center | 2022 Value-Add Property Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] | 82,000 |  |
Date acquired | [5] | Apr. 08, 2022 |  |
Costs | [4],[5] | $ 29,017,000 |  |
Mesa Gateway Commerce Center | 2022 Value-Add Property Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] | 147,000 |  |
Date acquired | [5] | Apr. 15, 2022 |  |
Costs | [4],[5] | $ 18,315,000 |  |
Access Point 3 | 2022 Value-Add Property Acquisitions |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] | 299,000 |  |
Date acquired | [5] | Jul. 12, 2022 |  |
Costs | [4],[5] | $ 21,127,000 |  |
Southpark Distribution Center 2 | 2021 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  | 79,000 |
Date acquired | [3] |  | Jun. 10, 2021 |
Costs | [3],[4] |  | $ 9,177,000 |
DFW Global Logistics Centre | 2021 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  | 611,000 |
Date acquired | [3] |  | Aug. 26, 2021 |
Costs | [3],[4] |  | $ 89,829,000 |
Progress Center 3 | 2021 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  | 50,000 |
Date acquired | [3] |  | Sep. 23, 2021 |
Costs | [3],[4] |  | $ 5,000,000 |
Texas Avenue | 2021 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  | 20,000 |
Date acquired | [3] |  | Oct. 15, 2021 |
Costs | [3],[4] |  | $ 4,143,000 |
Access Point 1 | 2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 156,000 |
Date acquired | [5] |  | Jan. 15, 2021 |
Costs | [4],[5] |  | $ 10,501,000 |
Northpoint 200 [Member] | 2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 79,000 |
Date acquired | [5] |  | Jan. 21, 2021 |
Costs | [4],[5] |  | $ 6,516,000 |
Access Point 2 | 2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 159,000 |
Date acquired | [5] |  | May 19, 2021 |
Costs | [4],[5] |  | $ 10,743,000 |
Cherokee 75 Business Center 2 | 2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 105,000 |
Date acquired | [5] |  | Jun. 17, 2021 |
Costs | [4],[5] |  | $ 8,837,000 |
Siempre Viva 3-6 | 2021 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  | 547,000 |
Date acquired | [5] |  | Dec. 01, 2021 |
Costs | [4],[5] |  | $ 134,479,000 |
Wells Point One | 2020 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  |  | 50,000
Date acquired | [3] |  |  | Feb. 28, 2020
Costs | [3],[4] |  |  | $ 6,231,000
Cherokee 75 Business Center 1 | 2020 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  |  | 85,000
Date acquired | [3] |  |  | Dec. 15, 2020
Costs | [3],[4] |  |  | $ 8,323,000
The Rock at Star Business Park | 2020 operating properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [3] |  |  | 212,000
Date acquired | [3] |  |  | Dec. 17, 2020
Costs | [3],[4] |  |  | $ 34,102,000
Rancho Distribution Center | 2020 value-add properties acquired |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² | [5] |  |  | 162,000
Date acquired | [5] |  |  | Oct. 15, 2020
Costs | [4],[5] |  |  | $ 27,862,000
Speed Distribution Center |  |  |  |
Real Estate Properties |  |  |  |
Size (square feet) | ft² |  |  | 519,000 |
Percentage of joint venture owned and controlled (after acquisition of noncontrolling interest) |  | 100.00% |  |
Asset Acquisition, Consideration Transferred, Transaction Cost |  | $ 18,599,000 |  |
Noncontrolling interest, ownership percentage acquired |  | 1.00% |  |
[1] | Value-add properties are defined as properties that are either acquired but not stabilized or can be converted to a higher and better use. Acquired properties meeting either of the following two conditions are considered value-add properties: (1) Less than 75% occupied as of the acquisition date (or will be less than 75% occupied within one year of acquisition date based on near term lease roll), or (2) 20% or greater of the acquisition cost will be spent to redevelop the property.
[2] | See Ground Leases discussion below for information regarding the Company’s right of use assets for ground leases.
[3] | Operating properties are defined as stabilized real estate properties (land including buildings and improvements) in the Company’s operating portfolio; included in Real estate properties on the Consolidated Balance Sheets
[4] | Cost is calculated in accordance with FASB ASC 805, Business Combinations, and represents the sum of the purchase price, closing costs and capitalized acquisition costs.
[5] | Value-add properties are defined in Note 2.
[6] | Excludes acquired development land as detailed below.
[7] | The Company acquired these operating properties along with two land parcels, also in Sacramento, CA and San Francisco, CA, in connection with its acquisition of Tulloch Corporation in June 2022. Size and cost are presented on an aggregate basis for the properties located in Sacramento, CA and San Francisco, CA, respectively. In consideration for this acquisition, the Company assumed a $60,000,000 loan and issued 1,868,809 shares of the Company’s common stock. The acquisition date fair value of the loan assumed was $60,000,000, and the acquisition date fair value of the common shares, which was based on the closing share price on the acquisition date, was $303,756,000.

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- Definition The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=123726172&loc=d3e511914-122862 + Details
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