Contractual interest rate for funds borrowed, under the debt agreement.

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Fair Value Measurements - Carrying Value and Fair Value of Long-Term Debt and Other Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Apr. 13, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 27, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants not settleable in cash, fair value			$ 3,900
5.00% Convertible Senior Notes due 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate	5.00%
7.75% Senior Secured Notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate	7.75%
12.875% Senior Secured Notes due 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate	12.875%
Level 2 \| Carrying Value \| 5.00% Convertible Senior Notes due 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 46,646			$ 44,783
Level 2 \| Carrying Value \| 7.75% Senior Secured Notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	292,968			292,015
Level 2 \| Carrying Value \| Term Loan B
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	222,407			230,474
Level 2 \| Carrying Value \| 12.875% Senior Secured Notes due 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	99,020
Level 2 \| Fair Value \| 5.00% Convertible Senior Notes due 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	44,706			66,477
Level 2 \| Fair Value \| 7.75% Senior Secured Notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	267,750			309,375
Level 2 \| Fair Value \| Term Loan B
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	203,500			240,625
Level 2 \| Fair Value \| 12.875% Senior Secured Notes due 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	109,284
Level 3 \| Carrying Value \| Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants not settleable in cash, fair value				8,206
Level 3 \| Carrying Value \| Mid Pac Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,408			1,433
Level 3 \| Carrying Value \| Retail Property Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	42,231			43,226
Level 3 \| Carrying Value \| PHL Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	5,833
Level 3 \| Fair Value \| Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants not settleable in cash, fair value				8,206
Level 3 \| Fair Value \| Mid Pac Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,408			1,433
Level 3 \| Fair Value \| Retail Property Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	42,231			$ 43,226
Level 3 \| Fair Value \| PHL Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 5,833
Term Loan \| Mid Pac Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate					4.375%
Term Loan \| PHL Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate		2.75%