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Financing Arrangements - Equipment Notes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Disclosure [Abstract]
Interest expense, debt	$ 0.2	$ 0.3	$ 0.4	$ 0.5

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- References

No definition available.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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-Publisher FASB
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