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Equity - Dividends (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2018
Equity [Abstract]      
Operating loss carryforwards     $ 567,700
Common stock dividends declared $ 7,834 $ 6,210  
Common stock dividends declared per share (in dollars per share) $ 0.10 $ 0.09