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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
OPERATING ACTIVITIES    
Net loss $ (6,657) $ (9,833)
Adjustments to reconcile net loss to net cash flows used in operating activities:    
Depreciation and amortization 402 389
Stock-based compensation 1,569 2,501
Non-cash lease expense, net 268 562
Deferred taxes 0 (158)
Loss on sale of property and equipment 0 176
Other 211 99
Change in operating assets and liabilities:    
Accounts receivable, net (85) 1,032
Inventory (336) 1,738
Prepaid expenses and other 822 2,208
Accounts payable and accrued expenses (947) (2,818)
Net cash used in operating activities (4,753) (4,104)
INVESTING ACTIVITIES    
Purchases of property and equipment (35) (506)
Net cash flows used in investing activities (35) (506)
FINANCING ACTIVITIES    
Proceeds from debt 0 2,906
Repayment of unsecured debt (629) 0
Proceeds from issuance of common stock 3,853 0
Proceeds from exercise of stock options 0 173
Net cash flows provided by financing activities 3,224 3,079
Net decrease in cash, cash equivalents and restricted cash (1,564) (1,531)
Cash, cash equivalents and restricted cash, beginning of period 4,525 9,608
Cash, cash equivalents and restricted cash, end of period $ 2,961 $ 8,077

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