CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 42,250	$ 57,563
Restricted cash	605	855
Investment in marketable securities (Note 6)	0	1,027
Trade receivable, net of allowances	7,583	15,819
Inventory (Note 7)	7,291	7,404
Prepaid and other expenses	5,119	4,591
Operating lease right of use assets (Note 10)	338	0
Total Current Assets	63,186	87,259
Non-current Assets:
Property and equipment, net (Note 8)	354	555
Operating lease right of use assets (Note 10)	0	1,583
Prepaid and other expenses	3,506	4,345
Total  Non-current Assets	3,860	6,483
Total  Assets	67,046	93,742
Current Liabilities:
Trade payables	6,510	4,780
Accrued Liabilities, Current	8,593	11,452
Employee-related obligations	2,752	4,360
Liability for employee severance benefits	206	312
Operating lease liabilities (Note10)	349	757
Other	0	104
Total Current Liabilities	18,410	21,765
Long-term Liabilities:
Operating lease liabilities (Note 10)	0	853
Long-term debt (Note 13)	0	33,174
Other liabilities	0	457
Total Long-term Liabilities	0	34,484
Total Liabilities	18,410	56,249
Commitments and Contingencies (Note 12)	0	0
Shareholders' Equity:
Preferred stock: $0.0001 par value; 20,000,000 shares authorized at December 31, 2021 and December 31, 2020, respectively; no shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively	0	0
Common stock: $0.0001 par value; 150,000,000 shares and 75,000,000 shares authorized at December 31, 2021 and December 31, 2020, respectively; 53,577,744 and 43,205,221 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively	5	4
Additional paid-in capital	688,156	603,685
Accumulated deficit	(639,525)	(566,196)
Accumulated other comprehensive income	0	0
Total Shareholders' Equity	48,636	37,493
Total Liabilities and Shareholders’ Equity	$ 67,046	$ 93,742