Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (54,410)	$ (70,539)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation, amortization, and impairment	2,387	2,964
Share-based compensation	4,381	6,819
Amortization of debt issuance costs and discounts	215	3,731
Interest expense related to the sale of future revenue	5,683	12,253
Loss on the extinguishment of debt	0	13,822
Other, net	(52)	(299)
Changes in operating assets and liabilities:
Trade receivables and other receivables, net	7,352	(5,353)
Inventories	(1,743)	(1,577)
Prepaid expenses and other assets	1,399	1,258
Accounts payable	1,633	1,225
Accrued expenses and other liabilities	(2,352)	(844)
Deferred revenue	25,043	3,561
Loans Payable	675	0
Net cash used for operating activities	(9,789)	(32,979)
Cash flows from investing activities:
Capital expenditures	(1,024)	(913)
Additions to intangible assets	(1,500)	0
Net cash used for investing activities	(2,524)	(913)
Cash flows from financing activities:
Proceeds from issuance of common stock under public equity offering, warrants and warrant exercises, net	9,751	29,780
Proceeds from common stock issued under private equity offering, net	3,805	0
Proceeds from shares issued under employee stock purchase plan	34	158
Proceeds from exercise of stock options	0	185
Premium paid to retire debt	(2,025)	0
Payments for taxes on share-based compensation	(3)	(14)
Net cash provided by financing activities	11,562	30,109
Net decrease in cash and cash equivalents	(751)	(3,783)
Cash and cash equivalents:
Beginning of period	28,024	31,807
End of period	27,273	28,024
Supplemental disclosures of cash flow information:
Cash payments for interest	$ 6,436	$ 6,438