Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio - Gross Investment (Details)

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Property Portfolio - Gross Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Beginning Balance $ 1,426,969 $ 1,484,177
Acquisitions 1,192 12,619
Capitalized costs 1,192 6,683
Disposition   (69,827)
Ending Balance 1,428,161 1,426,969
Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   5,936
Jacksonville [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (3,850)
North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (7,572)
Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (58,405)
Land [Member]    
Property, Plant and Equipment [Line Items]    
Beginning Balance 164,315 168,308
Acquisitions   771
Disposition   (4,764)
Ending Balance 164,315 164,315
Land [Member] | Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   771
Land [Member] | Jacksonville [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (1,023)
Land [Member] | North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (927)
Land [Member] | Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (2,814)
Buildings    
Property, Plant and Equipment [Line Items]    
Beginning Balance 1,035,705 1,079,781
Acquisitions 519 6,944
Capitalized costs 519 3,146
Disposition   (51,020)
Ending Balance 1,036,224 1,035,705
Buildings | Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   3,798
Buildings | Jacksonville [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (2,827)
Buildings | North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (4,640)
Buildings | Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (43,553)
Site Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Beginning Balance 21,974 22,024
Acquisitions 10 1,183
Capitalized costs 10 1,009
Disposition   (1,233)
Ending Balance 21,984 21,974
Site Improvements [Member] | Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   174
Site Improvements [Member] | North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (106)
Site Improvements [Member] | Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (1,127)
Tenant improvements [Member]    
Property, Plant and Equipment [Line Items]    
Beginning Balance 66,358 65,987
Acquisitions 663 2,677
Capitalized costs 663 2,356
Disposition   (2,306)
Ending Balance 67,021 66,358
Tenant improvements [Member] | Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   321
Tenant improvements [Member] | North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (801)
Tenant improvements [Member] | Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (1,505)
Intangibles [Member]    
Property, Plant and Equipment [Line Items]    
Beginning Balance 138,617 148,077
Acquisitions   1,044
Capitalized costs   172
Disposition   (10,504)
Ending Balance $ 138,617 138,617
Intangibles [Member] | Redding Facility [Member]    
Property, Plant and Equipment [Line Items]    
Acquisitions   872
Intangibles [Member] | North Charleston Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   (1,098)
Intangibles [Member] | Oklahoma City Facility [Member]    
Property, Plant and Equipment [Line Items]    
Disposition   $ (9,406)