Chapter 11 Reorganization (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Reorganization, Chapter 11 [Line Items]
Common stock, par value	$ 0.001	$ 0.001
Allowed claim	$ 125
Common Class A [Member]
Reorganization, Chapter 11 [Line Items]
Common stock, par value	$ 0.01
Rights outstanding	735,189
Proceeds from rights offering	$ 952
7.125% Senior Notes [Member]
Reorganization, Chapter 11 [Line Items]
Stated interest rate on unsecured senior notes	7.125%
7.750% Senior Notes [Member]
Reorganization, Chapter 11 [Line Items]
Stated interest rate on unsecured senior notes	7.75%
Credit Facility [Member]
Reorganization, Chapter 11 [Line Items]
Credit facility, borrowing capacity	$ 120,000

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