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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current Assets:    
Cash and cash equivalents $ 103,406 $ 57,563
Restricted cash 605 855
Investment in marketable securities (Note 6) 0 1,027
Trade receivables, net of allowances 10,868 15,819
Prepaid and other assets 5,268 4,591
Inventory (Note 7) 8,279 7,404
Total Current Assets 128,426 87,259
Property and equipment, net 501 555
Operating lease right-of-use assets (Note 10) 1,225 1,583
Prepaid and other assets 3,831 4,345
Total Assets 133,983 93,742
Current Liabilities:    
Trade payables 10,080 4,780
Accrued expenses (Note 4) 10,146 11,452
Debt (Note 8) 33,375 0
Employee related obligations 3,481 4,360
Operating lease liabilities (Note 10) 434 757
Other 104 104
Total Current Liabilities 57,620 21,453
Liability for employee severance benefits 206 312
Operating lease liabilities (Note 10) 812 853
Long-term debt (Note 8) 0 33,174
Other liabilities 452 457
Total Liabilities 59,090 56,249
Commitments and Contingencies (Note 11) 0 0
STOCKHOLDERS' EQUITY:    
Preferred stock: $0.0001 par value; 20,000,000 shares authorized at June 30, 2021 and December 31, 2020, respectively; no shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively 0 0
Common stock: $0.0001 par value; 75,000,000 shares authorized at June 30, 2021 and December 31, 2020, respectively; 51,511,845 and 43,205,221 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively 5 4
Additional paid-in capital 681,558 603,685
Accumulated deficit (606,670) (566,196)
Total Shareholders' Equity 74,893 37,493
Total Liabilities and Shareholders’ Equity $ 133,983 $ 93,742