Product Revenue Net (Tables)

6 Months Ended

Jun. 30, 2022

Net Product Revenue [Member]

Concentration Risk [Line Items]

Schedules of Concentration of Risk Percentage

Revenue earned from each customer as a percentage of net product revenue is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Customer 1		37	%		31	%		40	%		36	%
Customer 2		9	%		8	%		10	%		11	%
Customer 3		14	%		46	%		17	%		37	%
Customer 4		24	%		14	%		21	%		16	%
Customer 5		16	%		0	%		11	%		0	%

Accounts Receivable [Member]

Concentration Risk [Line Items]

Schedules of Concentration of Risk Percentage

As of June 30, 2022 and December 31, 2021, the five individual customers represented as a percentage of accounts receivable as follows:

	June 30, 2022			December 31, 2021
Customer 1		21	%		15	%
Customer 2		12	%		10	%
Customer 3		16	%		22	%
Customer 4		25	%		29	%
Customer 5		26	%		24	%

TAZVERIK [Member]

Concentration Risk [Line Items]

Summary of Product Revenue Allowance and Reserve Categories

The following table summarizes activity in each of the above product revenue allowances and reserve categories for the six months ended June 30, 2022:

	Chargebacks, Discounts, and			Government and Other
	Fees			Rebates			Returns		Total
	(In thousands)
Balance, January 1, 2022	$	244		$	586		$	109	$	939
Provision		1,139			2,539			22		3,700
Payments or credits		(1,106	)		(2,423	)		—		(3,529	)
Balance, June 30, 2022	$	277		$	702		$	131	$	1,110