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Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Cash flows from operating activities    
Net loss $ (65,447) $ (43,159)
Adjustments to reconcile net loss to net cash, cash equivalents, and restricted cash used in operating activities    
Depreciation and amortization 3,597 3,178
Amortization of lease right-of-use assets 2,247  
Loss (gain) on extinguishment of liabilities, net 6,981 (2,298)
Share based compensation expense 5,961 4,944
Change in fair value of warrant liability (84)  
Change in contingent consideration   1,622
Provision for doubtful accounts 93 193
Accrued interest, amortization of debt issuance costs and other 5,037 2,706
Inventory excess and obsolescence 906 0
Impairment loss on intangible assets 81  
Changes in operating assets and liabilities:    
Accounts receivable (1,501) 11,454
Other current assets 1,113 1,369
Other long-term assets (3,504) 875
Accounts payable and other accrued liabilities (773) (7,425)
Deferred revenue (1,213) (1,682)
Tenant improvement allowances received 2,471  
Current and long-term operating lease liabilities (937)  
Net cash and cash equivalents and restricted cash used in operating activities (44,972) (28,223)
Cash flows from investing activities    
Purchase of property and equipment (3,298) (2,241)
Patent costs and intangible asset acquisition, net (236) (306)
Net cash and cash equivalents and restricted cash used in investing activities (3,534) (2,547)
Cash flows from financing activities    
Proceeds from the issuance of common stock 59,538 16,343
Proceeds from issuance of common stock under employee stock purchase plan 355 328
Proceeds from exercise of stock options 269 769
Payment of contingent consideration (10,822)  
Proceeds from term loan and notes payable 45,102 30,078
Repayment of term loan and notes payable (28,604) (45,428)
Payment of debt issuance costs (3,725) (164)
Deferred offering costs (129)  
Equity financing costs (3,069) (664)
Other (33)  
Net cash and cash equivalents and restricted cash provided by financing activities 58,882 1,262
Net increase (decrease) in cash and cash equivalents and restricted cash 10,376 (29,508)
Cash, cash equivalents, and restricted cash ‑ beginning of period 32,798 62,306
Cash, cash equivalents, and restricted cash ‑ end of period 43,174 32,798
Supplemental cash flow information    
Common stock issued for deferred offering costs 600  
Deferred offering costs amortized against Additional paid-in capital 75  
Issuance of Perceptive Warrants 3,051  
Debt issuance costs included in Accounts payable and other accrued liabilities 631 15
Equity financing costs included in Accounts payable and other accrued liabilities 160  
Operating lease right-of-use assets obtained in exchange for lease liabilities at adoption of ASC 842 1,269  
Operating lease right-of-use assets obtained in exchange for lease liabilities 3,936  
Finance lease right-of-use assets obtained in exchange for lease liabilities 123  
Cash paid for interest $ 1,009 $ 1,676