v3.25.2
Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities:    
Net loss $ (22,618) $ (18,901)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 2,196 2,192
Lease right-of-use asset amortization 378 233
Net book value of consigned equipment sold 55 21
Loss on disposal of property and equipment 113 361
Stock-based compensation 6,553 6,579
Credit loss expense (recovery) 10 (130)
Change in excess/obsolete inventory reserve 165 137
Amortization of discounts on investments (1,635) (3,665)
Changes in operating assets and liabilities, net of effects of acquisition:    
Accounts receivable (1,077) 1,327
Inventory 754 833
Prepaid expense and other current assets 773 1,322
Other assets (1,140) (321)
Accounts payable, accrued expenses and other (5,340) (3,497)
Operating lease liability (593) (215)
Deferred revenue (2,831) (1,701)
Other liabilities (26) 27
Net cash used in operating activities (24,263) (15,398)
Cash flows from investing activities:    
Purchases of investments (63,523) (79,353)
Maturities of investments 77,600 85,440
Purchases of property and equipment (1,237) (1,098)
Acquisition of business, net of cash acquired of $541 (1,773)  
Net cash provided by investing activities 11,067 4,989
Cash flows from financing activities:    
Proceeds from exercise of stock options 403 1,151
Proceeds from issuance of common stock under employee stock purchase plan 134 265
Net cash provided by financing activities 537 1,416
Net decrease in cash and cash equivalents (12,659) (8,993)
Cash and cash equivalents, beginning of period 27,884 46,506
Cash and cash equivalents, end of period 15,225 37,513
Supplemental disclosure of non-cash investing and financing activities:    
Property and equipment purchases included in accounts payable and accrued expenses $ 91 $ 80