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Equity (Issuance Activity) (Details) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Class of Stock [Line Items]      
Gross proceeds received $ 13,259 $ 0 $ 0
Common Stock      
Class of Stock [Line Items]      
Common shares issued (in shares) 4,729    
Gross proceeds received $ 14,717    
Commissions and other expenses 184    
Net proceeds $ 14,533