Fair Value Measurements (Narrative) (Details)	Sep. 30, 2020	Dec. 31, 2019	Jun. 26, 2019
Term Loan Due 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading prices rate to calculate the fair value	94.50%	100.95%
6.75% Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	6.75%	6.75%	6.75%
Trading prices rate to calculate the fair value	92.75%	106.65%
Senior Notes | 6.75% Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	6.75%		6.75%
Trading prices rate to calculate the fair value	6.75%	6.75%