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Commitments and Contingencies Lease Liabilities Cash Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Lease Liability Activity
Finance Lease, Principal Payments	$ 35	$ 27	$ 68	$ 505
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	14	0	0	2,136
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 37	$ 28	$ 70	$ 522

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[Line Items] for Financing Lease Liability Activity [Table]

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- Definition

Amount of cash outflow for principal payment on finance lease.

+ References

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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