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Other Equity Matters Dividends (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Equity [Abstract]    
Redeemable Preferred Stock Dividends $ 305 $ 0
Dividends $ 40,400 $ 36,000
Cash dividends paid per common share $ 0.52 $ 0.45