Liquidity and Going Concern Considerations (Details)			3 Months Ended			5 Months Ended
	Apr. 08, 2022 USD ($)	Apr. 07, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 08, 2021 businessDay $ / shares	Apr. 06, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Liquidity and Going Concern Considerations [Line Items]
Accumulated deficit				$ (377,242,000)				$ (370,080,000)
Stockholders' equity				(4,807,000)	$ 26,178,000			2,535,000	$ 34,170,000
Cash and Cash Equivalents				9,914,000				$ 13,280,000
Working capital				5,200,000
Net cash used in operating activities				$ (9,812,000)	$ (12,495,000)
Period to regain Nasdaq minimum bid requirements						180 days
Common stock, closing bid price (at least) (in dollars per share) | $ / shares						$ 1.00
Number of consecutive business days (minimum) | businessDay						10
Subsequent event
Liquidity and Going Concern Considerations [Line Items]
Additional capital earned			$ 15,000,000				$ 15,000,000
Subsequent event | Da Vita Healthcare Partners Inc | Share Issuance, Tranche One
Liquidity and Going Concern Considerations [Line Items]
Proceeds from issuance of convertible preferred stock		$ 7,500,000
Subsequent event | Da Vita Healthcare Partners Inc | Forecast | Share Issuance, Tranche One
Liquidity and Going Concern Considerations [Line Items]
Proceeds from issuance of convertible preferred stock		$ 7,500,000
Subsequent event | Da Vita Healthcare Partners Inc | Forecast | Share Issuance, Tranche Two
Liquidity and Going Concern Considerations [Line Items]
Proceeds from issuance of convertible preferred stock			7,500,000
Subsequent event | Da Vita Healthcare Partners Inc | Forecast | Series X Convertible Preferred Stock | Private Placement
Liquidity and Going Concern Considerations [Line Items]
Sale of stock, consideration received on transaction			$ 15,000,000
Subsequent event | Cantor Fitzgerald & Co
Liquidity and Going Concern Considerations [Line Items]
Sales agreement, threshold sale of shares	$ 12,200,000