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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash Flows From Operating Activities:    
Net loss $ (96,884) $ (23,929)
Adjustments to reconcile net loss to net cash used in operating activities:    
Impairment loss 63,809  
Depreciation and amortization 15,027 13,127
Amortization of debt discount 1,198 1,283
Non-cash operating lease expense 2,826 2,281
Unrealized (gain) loss on investments in equity securities 1,026 (105)
Realized (gain) loss on available-for-sale investments (1,968) 69
Gain on extinguishment of debt (1,179)  
Stock-based compensation expense 10,453 10,984
Loss on disposal of property and equipment 238 190
Gain on insurance settlement   (2,642)
Change in credit losses (18) (133)
Insurance proceeds for operations   1,212
Change in contingent consideration (1,741) (68)
Changes in operating assets and liabilities:    
Accounts receivable 1,558 1,104
Inventories 2,432 (1,247)
Prepaid expenses and other current assets (1,381) 1,251
Deposits (9) (197)
Operating lease liabilities (2,754) (2,102)
Accounts payable and other accrued expenses (2,294) (2,874)
Accrued compensation and related expenses (630) 248
Deferred revenue 23 488
Net deferred tax asset (1,022) (220)
Net cash used in operating activities (11,290) (1,280)
Cash Flows From Investing Activities:    
Purchases of property and equipment (7,796) (18,243)
Insurance proceeds for loss of fixed assets   976
Software development costs (2,074) (2,534)
Purchases of short-term investments (49,922)  
Sales/maturities of short-term investments 80,225 52,487
Patent and trademark costs (667) (391)
Net cash provided by investing activities 19,766 32,295
Cash Flows From Financing Activities:    
Proceeds from exercise of stock options 627 1,300
Cash paid to repurchase of 2026 Senior Notes (8,663)  
Repayment of notes payable (72) (11)
Repayment of finance lease liabilities (144) (70)
Net cash provided by (used in) financing activities (8,252) 1,219
Effect of exchange rates on cash and cash equivalents (112) (1,515)
Net change in cash and cash equivalents 112 30,719
Cash and cash equivalents - beginning of period 46,346 36,595
Cash and cash equivalents - end of period 46,458 67,314
Supplemental Disclosure of Cash Flow Information:    
Cash paid for interest 1,611 1,725
Cash paid for income taxes 707 1,103
Supplemental Disclosure of Non-Cash Financing Activities:    
Operating lease right-of-use assets and operating lease liabilities 186 5,603
Net unrealized gain (loss) on available-for-sale debt securities 1,255 2,452
Reclassification of realized gain (loss) on available-for-sale debt securities to earnings 1,619 (631)
Paid-in-kind preferred stock dividend, including beneficial conversion feature 4,000 4,000
Fixed assets included in accounts payable and accrued liabilities $ 464 $ 822

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