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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares outstanding 46,650,391 46,617,441
Life Storage LP [Member]    
Limited partners’ redeemable capital interest, units outstanding 248,466 248,966
General partner, units outstanding 468,989 468,663
Limited partners, units outstanding 46,181,402 46,148,778