Debt and Financing Obligation - Covenants Narrative (Details) - Line of Credit - Revolving credit facility - $400.0 million revolving credit facility, due 2024 ("Revolving Facility")	Sep. 30, 2020 USD ($)
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio	4.50
Minimum consolidated interest coverage ratio	2.50
Cross default covenant threshold	$ 35,000,000.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Balance Type:	na
Period Type:	duration