Long-Term Debt (Schedule of Early Redemption Prices on 8% Senior Secured Notes due 2026) (Details) - Senior Secured Notes at 8.0, Due 2026 [Member] - Senior Secured Notes [Member]		6 Months Ended
Mar. 06, 2019	Jun. 30, 2019
Debt instrument redemption price percentage	108.00%
Debt Instrument, Redemption, Period One [Member]
Debt instrument redemption price percentage		104.00%
Debt instrument redemption period start date		Mar. 15, 2022
Debt instrument redemption period end date		Mar. 14, 2023
Debt Instrument, Redemption, Period Two [Member]
Debt instrument redemption price percentage		102.00%
Debt instrument redemption period start date		Mar. 15, 2023
Debt instrument redemption period end date		Mar. 14, 2024
Debt Instrument, Redemption, Period Three [Member]
Debt instrument redemption price percentage		100.00%
Debt instrument redemption period start date		Mar. 15, 2024
Debt instrument redemption period end date		Mar. 14, 2026

End date of debt instrument redemption period, in CCYY-MM-DD format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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- Definition

Start date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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