Equity - Schedule of Dividends Declared (Details) - Preferred Stock shares in Thousands, $ in Thousands	Oct. 01, 2018 USD ($) shares	Sep. 15, 2018 shares	Jul. 01, 2018 USD ($) shares	Jun. 15, 2018 shares	Apr. 01, 2018 USD ($) shares	Mar. 15, 2018 shares
Series A Cumulative Preferred Stock [Member]
Class of Stock [Line Items]
Number of Shareholders		287		282		277
Total cash paid | $	$ 0		$ 0		$ 0
Total shares paid in kind (in thousands)	5		5		5
Series B Cumulative Preferred Stock [Member]
Class of Stock [Line Items]
Number of Shareholders		104		102		101
Total cash paid | $	$ 0		$ 0		$ 0
Total shares paid in kind (in thousands)	2		2		1