CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (40,382,000)	$ (22,290,000)
Adjustments to reconcile net loss to cash flows used in operating activities:
Amortization of intangible assets	1,230,000	1,230,000
Depreciation of property and equipment	170,000	142,000
Amortization of debt discount and premium and discount on available-for-sale marketable securities	(4,000)	300,000
(Gain) loss on extinguishment of debt	1,559,000	(2,065,000)
Stock-based compensation	7,617,000	2,168,000
Changes in operating assets and liabilities:
Accounts receivable and other current assets	(9,310,000)	(5,943,000)
Inventory	362,000	(43,000)
Accounts payable and accrued expenses	(90,000)	1,354,000
Right-of-use assets and operating lease liabilities	(10,000)	(74,000)
Deferred revenue	(423,000)	(421,000)
Net cash used in operating activities	(39,281,000)	(25,642,000)
Cash flows from investing activities:
Purchases of marketable securities	(92,087,000)
Sales and maturities of marketable securities	36,000,000
Purchases of property and equipment	(367,000)	(25,000)
Net cash used in investing activities	(56,454,000)	(25,000)
Cash flows from financing activities:
Proceeds from issuance of stock		115,666,000
Proceeds from issuance of long-term debt	30,000,000
Payment of equity and debt issue costs	(573,000)	(7,263,000)
Payment of long-term debt	(38,235,000)
Payment of extinguishment of debt costs	(2,294,000)
Borrowings under revolving facility	21,934,000
Repayment under revolving facility	(11,459,000)
Net settlement of stock units to satisfy statutory tax withholding	(271,000)	(140,000)
Proceeds from exercise of stock options	241,000	183,000
Principal payments on finance lease obligations	(67,000)	(58,000)
Net cash (used in) provided by financing activities	(724,000)	108,388,000
Net increase (decrease) in cash, cash equivalents and restricted cash	(96,459,000)	82,721,000
Cash, cash equivalents and restricted cash at beginning of period	178,743,000	45,059,000
Cash, cash equivalents and restricted cash at end of period	82,284,000	127,780,000
Supplemental cash flow information:
Cash interest paid	1,349,000	2,403,000
Supplemental disclosure of non-cash investing and financing activities:
Stock issuance costs		65,000
Debt issue costs	26,000
Accrued term loan exit fee	$ 600,000
Payments forgiven under paycheck protection program loan		$ 2,041,000