Income Taxes, Deferred Taxes and Other Information (Details) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 AUD ($)
Noncurrent [Abstract]
Accrued leave	$ 59	$ 61
Stock based compensation	368	293
Net operating loss carryforward	42,363	37,665
Other	131	11
Intangibles	723	751
R&D credit carryforward	531	531
Total deferred tax assets	44,175	39,312
Less: valuation allowance	(44,175)	(39,312)
Total	0	0
Operating Loss Carryforwards [Abstract]
Increase (decrease) in valuation allowance	4,900	(7,200)
Unrecognized Tax Benefits [Abstract]
Uncertain tax positions	0	0
Penalties and Interest Accrued [Abstract]
Interest and penalties accrued on uncertain tax positions	$ 0	$ 0
Earliest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss (NOL) carryforwards, expiration date	Dec. 31, 2025
Latest Tax Year [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss (NOL) carryforwards, expiration date	Dec. 31, 2038
Federal [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss (NOL) carryforwards	$ 186,400
Net operating loss (NOL) carryforwards with expiration date	120,100
Net operating loss (NOL) carryforwards with no expiration date	66,300
State [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss (NOL) carryforwards	$ 44,400
Australian [Member]
Operating Loss Carryforwards [Abstract]
Net operating loss (NOL) carryforwards			$ 0