Stockholders' Equity and Partners' Capital - Summary of Dividends Declared (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 05, 2018
Mar. 31, 2018
Mar. 31, 2017
Equity [Abstract]      
Preferred stock, dividend per share (in dollars per share) $ 0.375    
Preferred stock, total amount $ 2,588 $ 2,588  
Common stock, dividend per share (in dollars per share) $ 0.18000 $ 0.18000 $ 0.18
Preferred stock, total amount $ 78,581 $ 78,581