CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 30,908	$ 42,250
Restricted cash	67	605
Trade receivable, net of allowances	173	7,583
Amount due from sale of MST Franchise	5,000	0
Prepaid and other expenses	2,127	4,565
Operating lease right of use assets (Note 7)	0	338
Discontinued operations - current assets (Note 4)	0	7,845
Total Current Assets	38,275	63,186
Property and equipment, net (Note 5)	0	354
Non-current prepaid expenses and other assets	2,483	3,506
Total Assets	40,758	67,046
Current Liabilities:
Trade payables	2,386	6,510
Accrued expenses (Note 6)	4,381	8,593
Employee-related obligations	2,372	2,752
Liability for employee severance benefits	206	206
Operating lease liabilities (Note 7)	0	349
Total Liabilities	9,345	18,410
Commitments and Contingencies (Note 9)
Mezzanine Equity:
Convertible Preferred Stock: $0.0001 par value; 20,000,000 and 0 shares authorized at December 31, 2022 and December 31, 2021, respectively; Series A Preferred Stock: 3,000 and 0 shares issued and outstanding at December 31, 2022 and December 31, 2021, respectively (Note 11)	211	0
Shareholders' Equity:
Common stock: $0.0001 par value; 150,000,000 shares and 150,000,000 shares authorized at December 31, 2022 and December 31, 2021, respectively; 3,229,704 and 2,976,541 shares issued and outstanding at December 31, 2022 and December 31, 2021, respectively	0	5
Additional paid-in capital	693,937	688,156
Accumulated deficit	(662,735)	(639,525)
Total Shareholders' Equity	31,202	48,636
Total Liabilities, Mezzanine Equity and Shareholders’ Equity	$ 40,758	$ 67,046