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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (2,524) $ (5,398)
Adjustments to reconcile net loss to net cash provided by (used in) operations:    
Depreciation and amortization 1,008 1,119
Stock-based compensation expense 1,229 1,357
Provision for excess and obsolete inventory 503 384
Amortization of operating lease right-of-use assets 192 195
Deferred income taxes (2) (1)
Change in fair value of contingent consideration 3,920 1,350
Other non-cash items (3) 5
Changes in operating asset and liability accounts:    
Accounts receivable 2,786 549
Inventory (3,799) (6,272)
Prepaid expenses and other assets (3,099) 6,738
Operating leases (195) (195)
Accounts payable and accrued expenses (1,734) (9,394)
Deferred revenue 5,127 7,318
Net cash provided by (used in) operating activities 3,409 (2,245)
Cash flows from investing activities:    
Purchases of property, plant and equipment (265) (214)
Change in other assets 245 (79)
Net cash used in investing activities (20) (293)
Cash flows from financing activities:    
Repayment of debt (16) (17)
Employee taxes paid related to net settlement of equity awards (126) 0
Net cash used in financing activities (142) (17)
Effect of exchange rate changes on cash (4) 2
Net increase (decrease) in cash, cash equivalents and restricted cash 3,243 (2,553)
Cash, cash equivalents and restricted cash at beginning of period 92,280 25,675
Cash, cash equivalents and restricted cash at end of period 95,523 23,122
Supplemental schedule of cash flow information:    
Cash paid for income taxes, net of refunds 148 81
Non-cash investing and financing activities    
Right-of-use assets obtained in exchange for new lease obligations 1,730 8
Issuance of common stock to settle liabilities $ 179 $ 163