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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 $ (78,726) $ (87,968) $ (144,250)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:      
Depreciation 39,101 37,450 35,372
Amortization of intangibles 33,446 35,133 34,058
Stock-based compensation 33,413 24,633 24,672
Non-cash operating lease expense 8,926 9,235 9,775
Amortization of convertible debt discount 2,725 2,691 2,657
Amortization of debt issuance costs 189 185 182
(Gain) loss on disposal of assets, net (49) 292 2,858
Gain on sale of assets held for sale 0 0 (2,048)
Impairment of assets 450 1,703 718
Other adjustments 178 186 1,714
Changes in assets and liabilities, net:      
Accounts receivable, net (19,313) (11,516) (7,581)
Inventories (2,699) (454) (1,100)
Prepaid and other assets (6,831) (3,180) (1,160)
Operating lease liabilities (5,999) (7,623) (8,557)
Deferred income tax liabilities, net (3,070) (11,193) (16,098)
Accrued compensation 9,283 13,020 1,837
Accounts payable, accrued and other liabilities (4,001) (4,547) 958
Net cash provided by (used in) operating activities 7,023 (1,953) (65,993)
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchases of marketable securities 0 (6,756) (97,605)
Proceeds from maturities of marketable securities 53,916 112,215 116,915
Purchases of property and equipment (41,061) (28,752) (30,891)
Proceeds from assets held for sale 0 0 12,098
Net cash provided by investing activities 12,855 76,707 517
CASH FLOWS FROM FINANCING ACTIVITIES      
Repayment of equipment financing obligations 0 (70) (758)
Issuance of common stock, net 4,646 4,624 12,587
Net cash provided by financing activities 4,646 4,554 11,829
Net change in cash and cash equivalents 24,524 79,308 (53,647)
Cash, cash equivalents and restricted cash, beginning of year 342,488 263,180 316,827
Cash, cash equivalents and restricted cash, end of year 367,012 342,488 263,180
Supplemental disclosure of cash flow information:      
Interest paid 3,829 3,380 3,404
Income taxes paid, net 207 175 180
Supplemental disclosure of non-cash investing and financing information:      
Purchases of property and equipment included in accounts payable $ 1,012 $ 610 $ 1,688

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