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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (31,563) $ (1,626)
Adjustments to reconcile loss to net cash used in operating activities:    
Depreciation and amortization 144 150
Amortization of investments 374 649
Stock-based compensation 6,078 13,925
Amortization of intangible asset 636 361
Changes in assets and liabilities:    
Accounts receivable, net 53,419 3,299
Inventory (52,940) (42,028)
Prepaid and other current assets (5,740) 1,251
Other long-term assets 0 (24)
Interest receivable 140 118
Deferred revenue (372) (662)
Accounts payable and other current liabilities (69,658) 6,479
Other long-term liabilities 635 (596)
Net cash used in operating activities (98,847) (18,704)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Maturities of securities 113,220 127,925
Purchases of securities (14,171)
Disposal of furniture, fixtures and equipment 0 4
Net cash provided by investing activities 99,049 127,929
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from exercise of stock options, net of transaction costs 30 2,059
Taxes paid related to stock-based awards (535) (7,252)
Net cash used in financing activities (505) (5,193)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH (303) 104,032
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD 223,372 190,879
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD 223,069 294,911
Cash paid during the year for:    
Income taxes 51 5
Supplemental disclosure of non-cash transactions:    
Initial recognition of operating lease right-of-use asset 1,036 0
Laxdale Milestone $ 0 $ 12,000