Annual report pursuant to Section 13 and 15(d)

Schedule III - Reconciliation (Details)

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Schedule III - Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Self Storage properties:      
Balance at beginning of year $ 2,637,723 $ 2,275,233 $ 1,844,336
Acquisitions and improvements 458,132 366,522 431,542
Reclassifications from assets for sale 0 0 8,607
Write-off of fully depreciated assets and other 0 (323) (50)
Dispositions (4,136) (3,709) (7,336)
Reclassification to assets held for sale 0 0 (1,866)
Balance at end of year 3,091,719 2,637,723 2,275,233
Accumulated depreciation:      
Balance at beginning of year 246,261 170,358 110,803
Depreciation expense 92,177 76,299 60,522
Write-off of fully depreciated assets and other 0 0 (10)
Dispositions (616) (396) (646)
Assets held for sale 0 0 (311)
Balance at end of year $ 337,822 $ 246,261 $ 170,358