Income Taxes - Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes.
Income (loss) from operations before income taxes	$ 2,949	$ (92,225)
Tax rate	21.00%	21.00%
Computed "expected" tax benefit	$ 619	$ (19,367)
State taxes, net of federal income tax benefit	1,516	(2,395)
Change in valuation allowance	(10,946)	12,459
Expiration of Stock Options	4,445
Nondeductible expenses	1,104	10,841
Return to Provision Adjustment	2,403
Other items	915	(1,531)
Income tax expense (benefit)	$ 56	$ 7