Quarterly report pursuant to Section 13 or 15(d)

10% Series B Redeemable Preferred Stock - Mezzanine Equity for the Series B Preferred Stock (Details)

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10% Series B Redeemable Preferred Stock - Mezzanine Equity for the Series B Preferred Stock (Details) - Series B Preferred Stock
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
shares
Increase (Decrease) in Temporary Equity [Roll Forward]  
Balance at the beginning of period, Temporary equity, stock outstanding (shares) | shares 150,626
Balance at the beginning of period, Temporary equity, carrying amount before guaranteed return $ 140,158
Balance at the beginning of period, Temporary equity, guaranteed return 710
Balance at the beginning of period, Temporary equity, carrying amount 140,868
Return (16% IRR) 16,510
Dividends declared and paid or payable in cash $ (6,827)
Dividends declared and paid-in-kind (shares) | shares 4,554
Dividends declared and paid-in-kind $ 4,554
Guaranteed return, dividends declared and paid-in-kind (4,554)
Accretion of discount - deemed dividend $ 984
Balance at the end of period, Temporary equity, stock outstanding (shares) | shares 155,180
Balance at the end of period, Temporary equity, carrying amount before guaranteed return $ 145,696
Balance at the end of period, Temporary equity, guaranteed return 5,839
Balance at the end of period, Temporary equity, carrying amount $ 151,535