v3.25.2
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2024
Cash Flows from Operating Activities      
Net loss $ (25,338) $ (40,488) $ (43,481)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:      
Depreciation and amortization   9,142 7,974
Amortization of right-of-use assets   741 417
Loss on sales of property, plant and equipment, net   574  
Share of net (income) loss of equity method investee (676) (606)  
Stock-based compensation expense   3,983 5,914
Change in fair value of warrant liabilities 3,216 (2,663) (202)
Accretion of discounts on other long-term liabilities   33 24
Accretion of loan receivable from equity method investee   (64)  
Amortization of premiums and accretion of discounts on available-for-sale securities   (2,490) (4,540)
Loss on change in assessment of finance lease purchase options   84  
Change in operating assets and liabilities that provided (used) cash and cash equivalents:      
Contract receivables   (2,816) (6,213)
Contract receivables from related parties     (4,581)
Prepaid expenses and other current assets and other assets   1,729 (2,287)
Accounts payable and other accrued liabilities   (2,054) 884
Deferred revenue   (2,789) 10,075
Deferred revenue from related parties     (828)
Accrued compensation   (2,476) (3,030)
Operating lease liabilities   (574) (305)
Net cash and cash equivalents used in operating activities   (40,734) (40,179)
Cash Flows from Investing Activities      
Purchases of property, plant and equipment, net   (5,044) (8,460)
Purchases of available-for-sale securities   (101,690) (99,548)
Proceeds from sales of available-for-sale securities   152,453 156,135
Gain on sale of available-for-sale securities   3  
Cash paid for loan receivable from equity method investee     (3,046)
Purchases of intangible assets   (649) (270)
Net cash and cash equivalents provided by investing activities   45,073 44,811
Cash Flows from Financing Activities      
Proceeds from exercise of stock options 478 659 197
Proceeds from issuance of shares of common stock under the ESPP 156 156 238
Cash paid for withholding of employee taxes related to stock-based compensation   (557) (479)
Repurchase of shares of common stock (3,592) (3,592) (8,274)
Payments on finance lease liabilities   (170) (213)
Net cash and cash equivalents used in financing activities   (3,504) (8,531)
Net increase (decrease) in cash and cash equivalents   835 (3,899)
Cash and cash equivalents at beginning of period   25,413 34,537
Cash and cash equivalents at end of period 26,248 26,248 30,638
Supplemental information      
Cash paid for interest   15 91
Accrued capital expenditures   1,092 744
Unpaid reimbursements on capital expenditures   417 0
Accrued excise tax on stock repurchases $ 35 $ 35 $ 82