Equity - Common Stock Dividends (Details) - $ / shares		3 Months Ended		6 Months Ended
	May 03, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Equity [Abstract]
Quarterly dividend of common stock declared (in dollars per share)	$ 0.1375	$ 0.14	$ 0.14	$ 0.28	$ 0.28
Annualized dividend rate (in dollars per share)	$ 0.55