CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (102,254,000)	$ (58,417,000)
Adjustments to reconcile net loss to cash flows used in operating activities:
Amortization of intangible assets	2,050,000	2,460,000
Impairment of intangible assets	20,699,000	0
Depreciation of property and equipment	396,000	311,000
Amortization of debt discount and premium and discount on available-for-sale marketable securities	(558,000)	628,000
Loss (gain) on extinguishment of debt	1,559,000	(2,065,000)
Provision for excess and obsolete inventory	1,949,000	1,278,000
Stock-based compensation	14,177,000	7,447,000
Changes in operating assets and liabilities:
Accounts receivable and other current assets	(2,662,000)	(10,603,000)
Inventory	(760,000)	1,347,000
Accounts payable and accrued expenses	1,198,000	8,476,000
Right-of-use assets and operating lease liabilities	69,000	(28,000)
Deferred revenue	(868,000)	(931,000)
Net cash used in operating activities	(65,005,000)	(50,097,000)
Cash flows from investing activities:
Purchases of marketable securities	(139,115,000)	(32,965,000)
Sales and maturities of marketable securities	124,000,000	0
Purchases of property and equipment	(2,150,000)	(156,000)
Net cash used in investing activities	(17,265,000)	(33,121,000)
Cash flows from financing activities:
Proceeds from issuance of stock and pre-funded warrants, net of issuance costs	0	216,825,000
Proceeds from issuance of long-term debt	30,000,000	0
Payment of equity and debt issue costs	(599,000)	0
Payment of long-term debt	(38,235,000)	0
Payment of extinguishment of debt costs	(2,294,000)	0
Borrowings under revolving facility	43,875,000	0
Repayment under revolving facility	(33,400,000)	0
Net settlement of stock units to satisfy statutory tax withholding	(295,000)	(150,000)
Proceeds from exercise of stock options	395,000	373,000
Principal payments on finance lease obligations	(137,000)	(146,000)
Net cash (used in) provided by financing activities	(690,000)	216,902,000
Net (decrease) increase in cash, cash equivalents and restricted cash	(82,960,000)	133,684,000
Cash, cash equivalents and restricted cash at beginning of year	178,743,000	45,059,000
Cash, cash equivalents and restricted cash at end of year	95,783,000	178,743,000
Supplemental cash flow information:
Cash interest paid	2,600,000	4,846,000
Supplemental disclosure of non-cash investing and financing activities:
Stock issuance costs	0	294,000
Accrued term loan exit fee	600,000	0
Payments forgiven under paycheck protection program loan	$ 0	$ 2,041,000