The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Refers to the equity interest percentage to be acquired by subsidiary.

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The amount of management fees paid from the proceeds of assets sold by the subsidiary.

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Refers to the percentage of equity interest to an additional investor as a consulting fee for services.

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Medical Oncology Partners (Details) - USD ($)			3 Months Ended
Medical Oncology Partners (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2016	Mar. 31, 2023	Mar. 31, 2022	Dec. 23, 2016
Medical Oncology Partners [Abstract]
Carrying value of investment	$ 157,000		$ 137,000
USNC's equity in (loss) income			$ 3,000	$ (133,000)
USNC [Member]
Medical Oncology Partners [Abstract]
Proceeds from sale of assets	2,060,000
Payment for management fees	$ 1,300,000
MOP [Member]
Medical Oncology Partners [Abstract]
Equity interest percentage to be acquired by subsidiary			100.00%
Investments in unconsolidated entities			$ 450,000
USNC's equity in (loss) income		$ (12,000)
MOP [Member] \| Other Investor [Member]
Medical Oncology Partners [Abstract]
Investments in unconsolidated entities			105,000
MOP [Member] \| USNC [Member]
Medical Oncology Partners [Abstract]
Investments in unconsolidated entities			173,000
Ownership percentage					35.83%
Carrying value of investment			149,000		$ 161,000
MOP [Member] \| USNC [Member] \| Dr. Jaime Lozano [Member]
Medical Oncology Partners [Abstract]
Investments in unconsolidated entities			$ 345,000
Ownership percentage			76.67%
Percentage of equity interest to an additional investor as a consulting fee for services			5.00%