v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash Flows from Operating Activities    
Net loss $ (36,849) $ (40,488)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:    
Depreciation and amortization 9,491 9,142
Amortization of right-of-use assets 594 741
Loss on sales of property, plant and equipment, net 198 574
Share of net loss (income) of equity method investee 4 (606)
Stock-based compensation expense 5,839 3,983
Change in fair value of warrant liabilities (11,891) (2,663)
Accretion of discounts on other long-term liabilities 34 33
Accretion of loan receivable from equity method investee (70) (64)
Amortization of premiums and accretion of discounts on available-for-sale securities (1,510) (2,490)
Loss on change in assessment of finance lease purchase options   84
Change in operating assets and liabilities that provided (used) cash and cash equivalents:    
Accounts receivable 1,374 (2,816)
Contract assets 7,490  
Prepaid expenses and other current assets and other assets 2,891 1,729
Accounts payable and other accrued liabilities (3,508) (2,054)
Deferred revenue 963 (2,789)
Deferred revenue from related parties (97)  
Accrued compensation (1,669) (2,476)
Operating lease liabilities (457) (574)
Net cash and cash equivalents used in operating activities (27,173) (40,734)
Cash Flows from Investing Activities    
Purchases of property, plant and equipment, net (7,933) (5,044)
Purchases of available-for-sale securities (245,450) (101,690)
Proceeds from sales of available-for-sale securities 163,626 152,453
Gain on sale of available-for-sale securities   3
Cash received on loan receivable from equity method investee 142  
Purchases of intangible assets (4) (649)
Net cash and cash equivalents (used in) provided by investing activities (89,619) 45,073
Cash Flows from Financing Activities    
Proceeds from exercise of stock options 6 659
Proceeds from issuance of shares of common stock under the ESPP 370 156
Cash paid for withholding of employee taxes related to stock-based compensation (2,156) (557)
Repurchase of shares of common stock   (3,592)
Payments on finance lease liabilities (96) (170)
Proceeds from the registered direct offering, net of fees 121,345  
Net cash and cash equivalents provided by (used in) financing activities 119,469 (3,504)
Net increase in cash and cash equivalents 2,677 835
Cash and cash equivalents at beginning of period 21,607 25,413
Cash and cash equivalents at end of period 24,284 26,248
Supplemental information    
Cash paid for interest 206 15
Accrued capital expenditures 2,144 1,092
Unpaid reimbursements on capital expenditures 2,407 417
Accrued withholding of employee taxes related to stock-based compensation $ 678  
Accrued excise tax on stock repurchases   $ 35