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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Sep. 30, 2023
Jun. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Cash flows from operating activities:                
Net income (loss) $ 4,887 $ (2,524) $ (2,485) $ (5,398) $ 2,363 $ (7,883)    
Adjustments to reconcile net income (loss) to net cash provided by (used in) operations:                
Depreciation and amortization         2,395 2,234    
Stock-based compensation expense         2,072 2,468    
Provision for excess and obsolete inventory 300   700   780 1,070 $ 800 $ 1,100
Amortization of operating lease right-of-use assets         546 122    
Deferred income taxes         (5,165) 0    
Change in fair value of contingent consideration 2,762   850   6,682 2,200    
Other non-cash items         (15) 273    
Changes in operating asset and liability accounts:                
Accounts receivable         2,538 3,152    
Inventory         (6,672) (11,935)    
Prepaid expenses and other assets         (2,082) 8,015    
Operating leases         (1,048) (123)    
Accounts payable and accrued expenses         (4,455) (9,399)    
Deferred revenue         18,182 8,458    
Net cash provided by (used in) operating activities         16,121 (1,348)    
Cash flows from investing activities:                
Purchases of property, plant and equipment         (852) (430)    
Change in other assets         218 (10)    
Net cash used in investing activities         (33,489) (440)    
Cash flows from financing activities:                
Repurchase of treasury stock         (126) 0    
Repayment of debt         (25) (33)    
Cash paid related to registration of common stock shares         (148) 0    
Proceeds from exercise of employee stock options and ESPP         157 136    
Net cash (used in) provided by financing activities         (142) 103    
Effect of exchange rate changes on cash         16 (10)    
Net decrease in cash, cash equivalents and restricted cash         (17,494) (1,695)    
Cash, cash equivalents and restricted cash at beginning of period   $ 92,280   $ 25,675 92,280 25,675    
Cash, cash equivalents and restricted cash at end of period 74,786   $ 23,980   74,786 23,980 $ 74,786 $ 23,980
Supplemental schedule of cash flow information:                
Cash paid for income taxes, net of refunds         248 171    
Non-cash investing and financing activities                
Right-of-use assets obtained in exchange for new lease obligations         0 242    
Postemployment Retirement Benefits [Member]                
Non-cash investing and financing activities                
Issuance of common stock         345 313    
Megatran Acquisition [Member]                
Non-cash investing and financing activities                
Issuance of common stock         6,504 0    
Megatran [Member]                
Cash flows from operating activities:                
Net income (loss) 2,100       2,100      
Cash flows from investing activities:                
Cash paid to settle Megatran contingent consideration liability $ (3,300)       (3,278) 0    
Cash paid for Megatran Acquisition, net of cash acquired         (29,577) 0    
Non-cash investing and financing activities                
Issuance of common stock         $ 31,350 $ 0