Income Taxes - Provision (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Current provision (benefit):
States	$ 14,000	$ 15,000	$ 34,000	$ 29,000
Total current provision	$ 14,000	$ 15,000	$ 34,000	$ 29,000

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Name:	us-gaap_CurrentIncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration