v3.21.2
CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating activities    
Net loss $ (22,142) $ (31,441)
Adjustments to reconcile net loss to net cash used by operating activities:    
Gain upon extinguishment of Payroll Protection Program Loan (1,528) 0
Depreciation and amortization 1,776 1,372
Stock-based compensation 865 3,638
Changes in operating assets and liabilities:    
Accounts receivable 4,681 (1,310)
Due to/from related parties (617) (498)
Inventory (291) (3,359)
Prepaid expenses and other current assets 2,873 (707)
Accounts payable 108 86
Accrued expenses (1,742) 1,717
Accrued compensation 334 (572)
Other 1,029 183
Net cash used by operating activities (14,654) (30,891)
Investing activities    
Sales and (purchases) of short-term investments, net 11,698 (20,802)
Purchases of land, buildings, and equipment (376) (1,253)
Net cash provided (used) by investing activities 11,322 (22,055)
Financing activities    
Proceeds from Payroll Protection Program loan 0 1,518
Repayments of financing lease obligations (271) (217)
Proceeds from the exercise of stock options 227 211
Net cash (used) provided by financing activities (44) 1,512
Net decrease in cash, cash equivalents, and restricted cash (3,376) (51,434)
Cash, cash equivalents, and restricted cash - beginning of period 18,289 60,038
Cash, cash equivalents, and restricted cash – end of period $ 14,913 $ 8,604

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