Commitments and Contingencies - Legal Proceedings (Details) - item |
12 Months Ended | ||
---|---|---|---|
Dec. 07, 2011 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Series B 9.375% redeemable preferred stock | |||
Commitments and Contingencies | |||
Preferred stock, dividend rate (as a percent) | 9.375% | 9.375% | |
Series C 9.125% redeemable preferred stock | |||
Commitments and Contingencies | |||
Preferred stock, dividend rate (as a percent) | 9.125% | 9.125% | |
Curtis J. Timm | Series B and C Preferred Stock | |||
Commitments and Contingencies | |||
Preferred stock, dividend rate (as a percent) | 2.00% | ||
Number of directors elected by Preferred holders | 2 | ||
Curtis J. Timm | Series B 9.375% redeemable preferred stock | |||
Commitments and Contingencies | |||
Preferred stock, dividend rate (as a percent) | 9.375% | ||
Curtis J. Timm | Series C 9.125% redeemable preferred stock | |||
Commitments and Contingencies | |||
Preferred stock, dividend rate (as a percent) | 9.125% |