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 income (loss)	$ 10,219	$ (4,111)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	21	23
Stock-based compensation	251	285
Non-cash lease expense	101	116
Loss on impairment of goodwill	0	484
Gain on debt extinguishment	(14,520)	0
Unrealized (gain) loss on foreign exchange rate changes	(209)	21
Changes in assets and liabilities:
Prepaid expenses and other current assets	270	218
Accounts payable	880	504
Accrued expenses	328	68
Operating lease liabilities	(113)	(127)
Other current liabilities	(175)	0
Net cash used in operating activities	(2,947)	(2,519)
Cash flows from financing activities:
Proceeds from ATM Program, net of issuance costs	1,367	0
Principal payments on loans payable	(233)	(252)
Payments on debt extinguishment	(100)	0
Proceeds from exercise of common stock warrants, net of expenses	0	843
Net cash provided by financing activities	1,034	591
Net decrease in cash, cash equivalents, and restricted cash	(1,913)	(1,928)
Cash, cash equivalents, and restricted cash - beginning of period	4,469	6,326
Cash, cash equivalents, and restricted cash - end of period	2,556	4,398
Supplementary disclosure of non-cash activity:
Fair value of common stock consideration related to debt extinguishment	280	0
January 2023 Existing Warrants [Member]
Supplementary disclosure of non-cash activity:
Fair value of warrant modifications related to the warrant exercise inducement	0	1,238
February 2023 Existing Warrants [Member]
Supplementary disclosure of non-cash activity:
Fair value of warrant modifications related to the warrant exercise inducement	$ 0	$ 274