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Equity - Dividends (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Equity [Abstract]          
Operating loss carryforwards         $ 460,600
Common stock dividends declared $ 8,445 $ 6,490 $ 16,278 $ 12,700  
Common stock dividends declared per share (in dollars per share) $ 0.11 $ 0.10 $ 0.21 $ 0.19