Consolidated Statements of Operations and Other Comprehensive Income (Loss) - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenues, net	$ 79,042,000	$ 14,514,000
Cost of revenues	37,054,000	9,908,000
Gross profit	41,988,000	4,606,000
Operating expenses:
Diagnostic expenses	9,174,000	448,000
General and administration	22,493,000	7,498,000
Research and development	520,000	633,000
Total operating expenses	32,187,000	8,579,000
Gain on sale of real estate		1,892,000
Income (loss) from operations	9,801,000	(2,081,000)
Interest income, net	642,000	62,000
Interest expense	(1,148,000)	(295,000)
Change in fair value of investment securities	(240,000)
Impairment of secured promissory note receivable	(3,750,000)
Income (loss) from continuing operations before income taxes	5,305,000	(2,314,000)
Income tax benefit (expense)	968,000	(12,000)
Income (loss) from continuing operations after income taxes	6,273,000	(2,326,000)
Discontinued Operations:
Income from discontinued operations		201,000
Net income (loss)	6,273,000	(2,125,000)
Other comprehensive loss:
Unrealized loss on marketable debt securities	(164,000)	(9,000)
Total comprehensive income (loss)	$ 6,109,000	$ (2,134,000)
Basic and earnings (loss) per share:
Income (loss) from continuing operations	$ 0.41	$ (0.20)
Income from discontinued operations		0.02
Net income (loss) per share	0.41	(0.18)
Diluted earnings (loss) per share:
Income (loss) from continuing operations	0.40	(0.20)
Income from discontinued operations		0.02
Net income (loss) per share	$ 0.40	$ (0.18)
Weighted average common shares outstanding:
Basic	15,172	11,595
Diluted	18,393	11,595