CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 50,495	$ 42,250
Restricted cash	605	605
Trade receivables, net of allowances	535	7,583
Amount due from sale of MST Franchise	5,000	0
Prepaid expenses and other assets	3,895	4,565
Operating lease right of use assets	124	338
Discontinued operations - current assets	0	7,845
Total Current Assets	60,654	63,186
Property and equipment, net	310	354
Non-current prepaid expenses and other assets	3,355	3,506
Total Assets	64,319	67,046
Current Liabilities:
Trade payables	3,612	6,510
Accrued expenses	3,312	8,593
Employee related obligations	1,331	2,752
Liability for employee severance benefits	216	206
Operating lease liabilities	117	349
Total Liabilities	8,588	18,410
Commitments and Contingencies (Note 7)
Stockholders' Equity:
Preferred stock: $0.0001 par value; 20,000,000 shares authorized at March 31, 2022 and December 31, 2021; no shares issued and outstanding at March 31, 2022 and December 31, 2021	0	0
Common stock: $0.0001 par value; 150,000,000 shares authorized at March 31, 2022 and December 31, 2021; 57,908,489 and 53,577,744 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	6	5
Additional paid-in capital	690,580	688,156
Accumulated deficit	(634,855)	(639,525)
Total Stockholders' Equity	55,731	48,636
Total Liabilities and Stockholders’ Equity	$ 64,319	$ 67,046