Stockholders Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended	145 Months Ended
	Nov. 30, 2006	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Series D preferred stock dividends percentage		9.00%
Redemption of Series D preferred stock		$ 10,000
Series D Preferred Stock
Class of Stock [Line Items]
Share issued (in shares)	100,000
Liquidation preference (in dollars per share)	$ 100
Series D preferred stock dividends percentage	7.00%		9.00%
Stock redeemed during period (in shares)		100,000
Redemption of Series D preferred stock		$ 17,200
Accrued unpaid dividends		$ 7,200
Preferred shares outstanding (in shares)		0	0	0	0