v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash flows from operating activities:    
Net loss $ (4,750) $ (10,261)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,047 1,096
Lease right-of-use asset amortization 221 181
Net book value of consigned equipment sold 14  
Loss on disposal of property and equipment   47
Stock-based compensation 1,141 3,039
Change in excess/obsolete inventory reserve 197 65
Amortization of discounts on investments (437) (884)
Changes in operating assets and liabilities, net of effects of acquisition:    
Accounts receivable (743) (839)
Inventory (380) 531
Prepaid expense and other current assets 69 65
Other assets (127) (254)
Accounts payable, accrued expenses and other (3,637) (5,589)
Operating lease liability (456) (278)
Deferred revenue (327) (1,326)
Other liabilities (1) (4)
Net cash used in operating activities (8,169) (14,411)
Cash flows from investing activities:    
Purchases of investments (25,122) (34,645)
Maturities of investments 28,000 46,600
Acquisition of intangible assets (150)  
Purchases of property and equipment (72) (653)
Acquisition of business, net of cash acquired of $541   (1,773)
Net cash provided by investing activities 2,656 9,529
Cash flows from financing activities:    
Proceeds from exercise of stock options 5 383
Net cash provided by financing activities 5 383
Net decrease in cash and cash equivalents (5,508) (4,499)
Cash and cash equivalents, beginning of period 20,065 27,884
Cash and cash equivalents, end of period 14,557 23,385
Supplemental cash flow information:    
Property and equipment purchases included in accounts payable and accrued expenses $ 24  
Right-of-use assets obtained in business combination by assumption of lease liabilities   $ 956