Quarterly report pursuant to Section 13 or 15(d)

Equity and Mezzanine Equity - Changes in Carrying Value of Series D Preferred (Details)

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Equity and Mezzanine Equity - Changes in Carrying Value of Series D Preferred (Details) - Series D Preferred - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Increase (Decrease) in Temporary Equity [Roll Forward]            
Series D Preferred, Beginning Balance $ 92,360 $ 89,792 $ 87,225 $ 82,090 $ 79,522 $ 76,955
Accretion of Preferred Stock discount 147 149 148 148 149 148
Undeclared dividends 2,372 2,419 2,419 2,419 2,419 2,419
Temporary Equity, Other Changes (1,833)          
Series D Preferred, Ending Balance $ 93,046 $ 92,360 $ 89,792 $ 84,657 $ 82,090 $ 79,522