Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net loss - before noncontrolling interest (“NCI”)	$ (18,512)	$ (22,214)
Adjustments to reconcile net loss - before NCI to net cash used in operating activities
Depreciation and amortization expense	586	727
Stock-based compensation	1,882	4,419
Gain on sale of intellectual property		(1,000)
APA-RDx: Issue common stock of majority-owned subsidiary - termination payment		713
Amortization of common stock payment for vendor service agreement	23
Change in fair value - Senior Secured Convertible Notes	2,163	1,040
Loss on issue - Senior Secured Convertible Note		1,111
Debt extinguishment loss - Senior Secured Convertible Note	369	525
Non-cash lease expense	2	79
Changes in operating assets and liabilities:
Accounts receivable	(6)	(10)
Prepaid expenses, deposits and current and other assets	531	(326)
Accounts payable	(301)	(1,444)
Accrued expenses and other current liabilities	154	18
Net cash flows used in operating activities	(13,109)	(16,362)
Cash flows from investing activities
Purchase of equipment	(42)	(26)
Proceeds from sale of intellectual property		1,000
Net cash flows provided by (used in) investing activities	(42)	974
Cash flows from financing activities
Proceeds – issue of preferred stock - majority-owned subsidiary	18,165	13,625
Proceeds – issue of Senior Secured Convertible Note		10,000
Payment – Senior Secured Convertible Note – acceleration floor payments	(322)
Proceeds – issue of common stock - At-The-Market Facility	786	557
Proceeds – majority-owned subsidiary common stock - Committed Equity Facility and At-The-Market Facility		284
Proceeds – issue common stock – Employee Stock Purchase Plan	62	182
Proceeds – majority-owned subsidiary common stock – Employee Stock Purchase Plan	353	276
Proceeds – exercise of stock options issued under equity plan of majority owned subsidiary	4
Net cash flows provided by financing activities	19,048	24,924
Net increase (decrease) in cash	5,897	9,536
Cash, beginning of period	19,639	39,744
Cash, end of period	$ 25,536	$ 49,280