Stockholders' Equity - Schedule of Dividends (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Series A Preferred Stock paid or payable in cash	$ 4,254	$ 3,967	$ 38
Series A Preferred Stock dividends	8,174	7,938	12,936
Series A Preferred Stock
Class of Stock [Line Items]
Series A Preferred Stock paid-in-kind	4,141	3,971	5,530
Series A Preferred Stock paid or payable in cash	4,033	3,967	38
Series A Preferred Stock dividends	8,174	7,938	5,568
Deemed dividend related to beneficial conversion feature	0	0	6,700
Series A Preferred Stock dividends and deemed dividends	$ 0	$ 0	$ 668