UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 21,503	$ (38,647)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	200	194
Intangible amortization	9,208	3,693
Stock-based and employee stock purchase compensation expense	7,208	797
Stock appreciation rights market adjustment	(130)	139
Warrant expense		1,584
Debt issuance costs amortization	1,361	680
Loss on debt extinguishment		22,639
Change in operating assets and liabilities:
Trade receivables	(9,019)	(10,984)
Inventory	(1,128)	(995)
Prepaid expenses and other assets	(622)	(2,987)
Other non-current assets		789
Trade payables	(550)	(4,287)
Accrued expenses and other current liabilities	2,606	5,456
Other non-current liabilities	(37)	59
Net cash provided by (used in) operating activities	30,600	(21,870)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(205)	(2)
Milestone and acquisition of intangible asset	(100,000)
Net cash used in investing activities	(100,205)	(2)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long term debt		200,000
Debt issuance costs		(5,804)
Extinguishment of debt		(102,538)
Extinguishment of debt exit fees		(18,047)
Proceeds from exercised options	660	251
Repurchase of common stock		(167)
Net cash provided by financing activities	660	73,695
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(68,945)	51,823
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH—Beginning of period	229,381	25,207
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH—End of period	160,436	77,030
Supplemental Disclosure of Cash Flow Information:
Cash paid during the year for interest	13,092	12,698
Cash paid during the year for milestones	$ 100,000
Supplemental Disclosures of Noncash Investing and Financing Activities:
Warrant financing		2,359
Series A Convertible Preferred Stock
Supplemental Disclosures of Noncash Investing and Financing Activities:
Preferred Stock accrued return		17,688
Accretion of issuance costs		1,551
Series B Convertible Preferred Stock
Supplemental Disclosures of Noncash Investing and Financing Activities:
Preferred Stock accrued return		604
Accretion of issuance costs		12
Series C Convertible Preferred Stock
Supplemental Disclosures of Noncash Investing and Financing Activities:
Preferred Stock accrued return		2,599
Accretion of issuance costs		$ 280