Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash Flows From Operating Activities:
Net loss	$ (21,464)	$ (18,263)
Adjustments to reconcile net loss to net cash used in operating activities:
Bargain purchase gain		(643)
Amortization of debt discount and debt issuance costs	3,348	3,321
Non-cash interest expense from long-term debt and convertible notes	5,842	6,955
Loss on extinguishment of long-term debt and convertible notes	21,295
Depreciation and amortization	10,620	7,076
Gain on forgiveness of PPP loan	(3,036)
Stock-based compensation expense	6,817	858
Change in fair value of redeemable convertible preferred stock warrant liability	328	(33)
Change in fair value of contingent consideration liability	427	(175)
Change in fair value of derivative liabilities	(38,007)	(8,340)
Deferred taxes		(132)
Net changes in operating assets and liabilities, net of acquired businesses:
Accounts receivable, net	1,087	(4,432)
Inventory	(9,072)	1,264
Prepaid expenses and other current assets	(5,025)	(1,064)
Accounts payable	3,300	(687)
Accrued liabilities	532	1,501
Accrued compensation	629	553
Net cash used in operating activities	(22,379)	(12,241)
Cash Flows From Investing Activities:
Cash paid for business combination		(15,000)
Purchase of property and equipment	(584)	(453)
Net cash used in investing activities	(584)	(15,453)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock	975	118
Proceeds from issuance of convertible notes and borrowing under term loans, net of payment of lender fees and costs	39,531	17,959
Proceeds from initial public offering, net of underwriting discount and commission	69,750
Payment of Delayed purchase obligation and Development Milestone	(25,000)
Payment of debt fees	(103)
Payment of Success Fee	(400)
Repayment of term loan	(35,376)
Payment of deferred offering costs	(3,165)
Net cash provided by financing activities	46,212	18,077
Net decrease in cash, cash equivalents and restricted cash	23,249	(9,617)
Cash, cash equivalents and restricted cash at the beginning of the period	25,166	34,783
Cash, cash equivalents and restricted cash at the end of the period	48,415	25,166
Reconciliation of cash, cash equivalents and restricted cash to balance sheets
Cash and cash equivalents	40,608	17,359
Restricted cash	7,807	7,807
Cash, cash equivalents and restricted cash in balance sheets	48,415	25,166
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	2,318	1,799
Cash paid for income taxes	18	4
Supplemental Disclosure of Non-cash Items:
Forgiveness of PPP loan	(3,036)
Conversion of Series D redeemable convertible preferred stock warrants into common stock warrants upon initial public offering	370
Conversion of Series D redeemable convertible preferred stock into common stock upon initial public offering	123,255
Conversion of 2018, 2019 and 2020 Notes into common stock upon initial public offering	89,303
Deferred offering costs reclassified to equity	3,165
Issuance of derivative instruments related to convertible notes		6,848
Fair value of net assets acquired in business combination		57,222
Fair value of contingent consideration in connection to business combination		23,842
Fair value of delayed cash consideration in connection to business combination		15,000
Issuance of Series D redeemable convertible preferred stock in connection to business combination		2,737
Vesting of early exercised stock options	74
Purchases of property and equipment included in accounts payable		6
Net reclassification of inventory to property and equipment for customer usage agreements	$ 3,598	$ 1,150