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Government Grants (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Other Income [Line Items]
Increase (decrease) in grants receivable	$ 16.1
Maryland
Other Income [Line Items]
Increase (decrease) in grants receivable	9.4
West Virginia
Other Income [Line Items]
Increase (decrease) in grants receivable	0.4
VIRGINIA
Other Income [Line Items]
Increase (decrease) in grants receivable	$ 6.3

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- Definition

Increase (Decrease) in Grants Receivable

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- Definition

Other Income [Line Items]

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