Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss - before noncontrolling interest (“NCI”)	$ (19,633)	$ (10,110)
Adjustments to reconcile net loss - before NCI to net cash used in operating activities
Depreciation expense	93	12
Amortization expense	123
Stock-based compensation	4,814	1,436
Fair value adjustment to contingent consideration payable	173
Change in fair value - Senior Secured Convertible Notes and Senior Convertible Note		(1,682)
Debt extinguishment loss - Senior Secured Convertible Notes and Senior Convertible Note		3,715
Non-cash lease expense	29
Changes in operating assets and liabilities:
Accounts receivable	111
Prepaid expenses and other current assets	(134)	(277)
Accounts payable	3,922	(1,070)
Accrued expenses and other current liabilities	(1,761)	(1,192)
Net cash flows used in operating activities	(12,263)	(9,168)
Cash flows from investing activities
Purchase of equipment	(574)	(36)
Acquisitions, net of cash acquired
Net cash flows used in investing activities	(574)	(36)
Cash flows from financing activities
Proceeds – issue of common stock – registered offerings		55,016
Payment – offering costs – registered offerings		(1,312)
Payment – repayment of Senior Convertible Note and Senior Secured Convertible Note		(14,816)
Payment – Senior Convertible Note and Senior Secured Convertible Note – non-installment payments		(154)
Proceeds – exercise of Series Z warrants		1,376
Proceeds – exercise of stock options	241	80
Proceeds – issue common stock – Employee Stock Purchase Plan	217	304
Proceeds – exercise of stock options issued under equity plan of majority owned subsidiary	187
Purchase Treasury Stock – payment of employee payroll tax obligation in connection with stock-based compensation	(329)
Net cash flows provided by financing activities	316	40,494
Net increase (decrease) in cash	(12,521)	31,290
Cash, beginning of period	77,258	17,256
Cash, end of period	$ 64,737	$ 48,546