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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities:    
Net loss $ (4,920) $ (27,342)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 825 541
Share-based compensation expense 4,183 5,389
Other adjustments 70 (719)
Net changes in assets and liabilities    
Accounts receivable (7,484) (10,589)
Inventories (66) (1,260)
Prepaid expenses and other current assets (3,016) (6,082)
Accounts payable & other current liabilities 1,779 7,528
Accrued expenses 218 3,415
Other assets and liabilities 179 (585)
Net cash used in operating activities (8,232) (29,704)
Cash flows from investing activities:    
Proceeds from sales of marketable securities 17,808 119,066
Purchases of marketable securities (5,491) (97,679)
Net cash provided by investing activities 12,317 21,387
Cash flows from financing activities:    
Proceeds from issuance of shares off the at-the-market offering program 0 9,250
Proceeds from stock option exercises and employee share purchase plan 690 3,940
Net cash provided by financing activities 690 13,190
Effect of foreign currency exchange rate changes on cash and cash equivalents 224 (246)
Net change in cash and cash equivalents 4,999 4,627
Cash and cash equivalents at January 1, 51,371 31,167
Cash and cash equivalents at March 31, 56,370 35,794
Supplemental disclosures of cash flow information:    
Interest paid $ 1,890 $ 730