CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 34,295,000	$ (129,455,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	3,181,000	3,091,000
Charges to provision for doubtful accounts	542,000	540,000
Inventory charge	73,000	1,082,000
Debt financing fees	20,053,000	4,158,000
Share-based compensation	8,587,000	12,779,000
Gain on sale of business	(143,384,000)
Expense for accretion of Mandatory Redeemable Preferred Stock	3,457,000
Loss on extinguishment of debt	8,380,000
Other	50,000	726,000
Changes in operating assets and liabilities:
Accounts receivable	3,044,000	(5,560,000)
Inventory	848,000	(451,000)
Prepaid and other current assets	180,000	(2,831,000)
Accounts payable	(6,186,000)	(1,476,000)
Accrued expenses and other current liabilities	3,705,000	13,504,000
Other non-current liabilities	(675,000)	758,000
Total adjustments	(98,145,000)	26,320,000
Net cash used in operating activities	(63,850,000)	(103,135,000)
Cash flows from investing activities:
Proceeds from sale of business, net of transaction costs	142,634,000
Payment of patent related costs	(297,000)	(675,000)
Purchase of fixed assets	(21,000)	(34,000)
Net cash provided by (used in) investing activities	142,316,000	(709,000)
Cash flows from financing activities:
Proceeds from sale of Mandatory Redeemable Preferred Stock, net of costs	16,252,000
Proceeds from make-whole derivative	1,751,000
Proceeds from sale of common stock, net of costs	2,454,000	182,881,000
Proceeds from exercise of options and warrants		302,000
Proceeds from sale of common stock related to employee stock purchase plan	14,000	134,000
Repayments of debt	(125,000,000)	(50,000,000)
Payment of debt financing fees	(729,000)	(5,118,000)
Net cash (used in) provided by financing activities	(105,258,000)	128,199,000
Net (decrease) increase in cash and restricted cash	(26,792,000)	24,355,000
Cash and restricted cash, beginning of period	65,122,000	80,486,000
Cash and restricted cash, end of period	38,330,000	104,841,000
Supplemental disclosure of cash flow information:
Interest paid	8,371,000	$ 19,675,000
Supplemental disclosure of noncash financing activities:
Paid in kind ("PIK") interest with corresponding increase in debt	2,452,000
PIK debt financing fees with corresponding increase in debt	16,980,000
Issue of warrants to lenders related to debt financing fees	$ 1,983,000