Stockholders' Equity - Additional Detail (Details) - $ / shares shares in Millions	May 05, 2017	Jun. 30, 2017	Dec. 31, 2016
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock shares outstanding (in shares)	3.3	0.0	3.3
Preferred stock, dividend rate, percentage	6.97%
Redemption price of preferred stock (in dollars per share)	$ 50.00
Common Stock
Class of Stock [Line Items]
Common stock closing price (in dollars per share)		$ 11.50