Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2008
Income Taxes [Line Items]
Operating loss carryforwards, net	$ 202,100	$ 5,500
Operating loss carryforwards, not subject to expiration	138,200
Operating loss carryforwards, subject to expiration	63,900
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	35,200
Research and Development Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Tax credit carryforward	$ 1,760