CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net loss	$ (9,280)	$ (7,388)
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation	74	92
Share-based compensation	3,386	1,351
Change in fair value of contingent consideration	(52,240)	(16,820)
Intangibles impairment charge	31,700	0
Changes in operating assets and liabilities:
Accounts receivable (net)	(1,107)	0
Prepaid expenses and other assets	(23,665)	(899)
Accounts payable	807	(378)
Accrued expenses and other liabilities	(4,453)	1,714
Deferred revenue	(1,500)	0
Net cash used in operating activities	(56,278)	(22,328)
Cash Flows from Investing Activities:
Purchases of equipment	(4)	(8)
Net cash used in investing activities	(4)	(8)
Cash Flows from Financing Activities:
Proceeds from issuance of common stock under ATM Offering, net of issuance costs	174,961	16,174
Proceeds from exercises of stock options	42	10
Proceeds from the exercise of common stock warrants	1,126	0
Net cash provided by financing activities	176,129	16,184
Net increase (decrease) in cash, cash equivalents and restricted cash	119,847	(6,152)
Cash, cash equivalents and restricted cash - beginning of period	55,409	48,141
Cash, cash equivalents and restricted cash - end of period	175,256	41,989
Supplemental cash flow disclosure:
Right-of-use assets obtained in exchange for lease obligations	0	290
Cash paid for amounts included in the measurement of lease liabilities	131	113
Supplemental disclosure of non-cash financing activities:
Deemed Dividend on adjustment of exercise price on certain warrants	$ 0	$ 147