v3.25.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Cash Flows From Operating Activities:      
Net loss $ (114,756) $ (99,587) $ (37,333)
Adjustments to reconcile net loss to net cash used in operating activities:      
Impairment loss 63,809 49,569  
Depreciation and amortization 30,757 27,487 22,765
Amortization of debt discount 1,940 2,526 2,581
Non-cash operating lease expense 5,770 5,103 3,645
Unrealized (gain) loss on investments in equity securities 899 (1,308) 11,406
Realized loss on investments in equity securities 48    
Realized loss on available-for-sale investments 4,091 67 102
Gain on extinguishment of debt (18,505) (5,679)  
Stock-based compensation expense 19,704 22,808 20,082
Loss on disposal of property and equipment 384 954 800
Gain on insurance settlement   (2,642) (4,815)
Change in credit losses (242) 822 234
Excess and obsolete inventory 234   651
Insurance proceeds for operations   1,212 9,883
Change in contingent consideration (1,847) (890) 216
Changes in operating assets and liabilities:      
Accounts receivable (4,149) 3,673 (4,137)
Inventories 3,252 1,508 (14,204)
Prepaid expenses and other current assets (2,149) (103) (1,598)
Deposits (1,443) (663) (60)
Operating lease liabilities (5,340) (4,595) (3,076)
Accounts payable and other accrued expenses (76) (2,766) (6,483)
Accrued compensation and related expenses 1,852 2,884 (1,569)
Deferred revenue (179) 842 (530)
Net deferred tax liability (377) (1,979) (411)
Net cash used in operating activities (16,323) (757) (1,851)
Cash Flows From Investing Activities:      
Purchases of property and equipment (17,254) (38,785) (22,107)
Insurance proceeds for loss of fixed assets   976 3,000
Software development costs (2,886) (5,244) (1,476)
Purchases of short-term investments (50,721) (42,677) (163,788)
Cash paid for acquisitions (313) (7,341) (6,554)
Sales/maturities of short-term investments 249,116 129,987 131,858
Patent and trademark costs (1,127) (871) (614)
Net cash provided by (used in) investing activities 176,815 36,045 (59,681)
Cash Flows From Financing Activities:      
Proceeds from exercise of stock options 2,790 1,478 2,048
Repurchase of common stock     (37,960)
Cash paid for repurchase of 2026 Senior Notes (163,772) (25,003)  
Repayment of notes payable (141) (71) (3,180)
Repayment of finance lease liabilities (408) (202) (82)
Net cash used in financing activities (161,531) (23,798) (39,174)
Effect of exchange rates on cash and cash equivalents (18) (1,739) (1,800)
Net change in cash and cash equivalents (1,057) 9,751 (102,506)
Cash and cash equivalents - beginning of period 46,346 36,595 139,101
Cash and cash equivalents - end of period 45,289 46,346 36,595
Supplemental Disclosure of Cash Flow Information:      
Cash paid for interest 2,693 3,399 3,628
Cash paid for income taxes 1,422 1,462 1,979
Supplemental Disclosure of Non-Cash Financing Activities:      
Operating lease right-of-use assets and operating lease liabilities 20,989 11,109 12,384
Net unrealized gain on available-for-sale debt securities 2,860 6,742 23,439
Reclassification of realized gain (loss) on available-for-sale debt securities to earnings (6,624) (3,008) 46
Paid-in-kind preferred stock dividend, including beneficial conversion feature 8,000 8,000 8,000
Fixed assets included in accounts payable and accrued liabilities 103 442 $ 1,003
Intangible assets included in property and equipment 252 8,710  
Purchase of equipment through finance lease obligations $ 936 $ 1,112  

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