Income Taxes, Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Net Deferred Tax Asset Arising Primarily from NOL Carryforwards and AMT Credit Carryforwards [Abstract]
Deferred tax asset	$ 39,680	$ 38,140
Valuation allowance	(39,680)	(38,140)
Net deferred tax asset recognized	$ 0	$ 0