Fair Value Measurements (Reconciliations Of Level 3 Fair Value Measurements) (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	$ 56,434	$ 885	$ 19,822	$ 885
(Gain) loss on change in warrant liability	(7,289)	3,574	29,323	3,574
Reclassification of warrant liability to capital in excess of par value	(49,145)	0	(49,145)	0
End of period	$ 0	$ 4,459	$ 0	$ 4,459