Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (9,036)	$ (2,432)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization expense	334	117
Provision (Recovery) for allowance for doubtful accounts	30	(77)
Share-based compensation expense	1,409	402
Non-Cash Lease Expense	336	0
Amortization of debt issuance costs	45	43
Recovery of inventory obsolescence	(3)	(27)
Gain on fair value adjustment to derivative liability	(90)	0
Net changes in operating assets and liabilities:
Accounts Receivable	2,542	3,769
Inventory	(548)	478
Prepaid expenses and other assets	1,233	(379)
Other non-current assets	(134)	0
Operating lease liabilities	(133)	0
Accounts payable	(607)	(1,173)
Accrued liabilities	(2,619)	(1,167)
Net cash used in operating activities	(7,241)	(446)
Cash flows from investing activities
Purchases of property and equipment	(1,481)	(196)
Net cash used in investing activities	(1,481)	(196)
Cash flows from financing activities
Repayment of PPP Loan	0	(1,788)
Proceeds from exercise of employee stock options	1,372	569
Net cash provided by (used in) financing activities	1,372	(1,219)
Net decrease in cash and cash equivalents	(7,350)	(1,861)
Cash and cash equivalents at beginning of period	105,833	18,079
Cash and cash equivalents at end of period	98,483	16,218
Supplemental disclosure of cash flow information:
Cash paid for interest	951	1,945
Operating lease right-of-use assets obtained in exchange for new lease liabilities	15,300	0
Supplemental disclosure of noncash financing activities:
Unpaid offering costs included in accounts payable and accrued liabilities	$ 0	$ 1,118