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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Operating activities:    
Net loss $ (16,659) $ (23,749)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 13,344 13,754
Revaluation of common stock warrant liability to estimated fair value 0 (7)
Depreciation and amortization 3,821 3,427
Asset impairments and write-downs 0 1,000
Amortization of right-of-use assets 1,402 1,337
Unrealized loss on long-term marketable equity securities 0 905
Revaluation of contingent consideration to estimated fair value 319 364
Amortization of premium and accretion of discount on short-term marketable securities, net 1,451 (773)
Changes in operating assets and liabilities:    
Accounts receivable (9,199) 7,664
Inventory (1,274) 1,217
Prepaid and other assets 108 1,515
Operating leases liabilities, net (1,372) (1,333)
Accounts payable (2,897) 2,590
Accrued compensation (4,820) (4,888)
Accrued and other liabilities 557 (2,352)
Change in deferred taxes (93) 0
Net cash (used in) provided by operating activities (15,312) 671
Investing activities:    
Acquisitions of business, net of cash acquired 0 (4,562)
Purchases of short-term marketable securities (57,746) (86,310)
Maturities of short-term marketable securities 86,893 78,972
Purchase of corporate equity securities 0 (100)
Additions of capital expenditures (1,487) (2,771)
Net cash provided by (used in) investing activities 27,660 (14,771)
Financing activities:    
Proceeds from issuance of common stock under employee stock purchase plan 532 456
Taxes paid related to net share settlement of restricted stock units (668) (656)
Proceeds from exercise of stock options 8 2
Payment of contingent consideration (625) (250)
Repurchase and retirement of common stock (522) (690)
Net cash used in financing activities (1,275) (1,138)
Effect of exchange rate changes on cash and cash equivalents 26 (25)
Net increase (decrease) in cash, cash equivalents and restricted cash 11,099 (15,263)
Cash, cash equivalents and restricted cash at beginning of period 82,783 90,443
Cash, cash equivalents and restricted cash at end of period $ 93,882 $ 75,180