Revenue - Product Revenue Allowance and Reserves (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	$ 1,888	$ 3,353
Provision related to sales in the current year	1,561	14,801
Adjustments related to prior period sales	(169)	0
Deductions applied and payments made	(2,538)	(13,644)
Ending balance	742	4,510
Chargebacks, Discounts and Fees [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	859	1,153
Provision related to sales in the current year	1,561	8,913
Adjustments related to prior period sales	40	0
Deductions applied and payments made	(2,279)	(8,092)
Ending balance	181	1,974
Government and Other Rebates [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	158	1,821
Provision related to sales in the current year	0	5,424
Adjustments related to prior period sales	(55)	0
Deductions applied and payments made	(103)	(5,293)
Ending balance	0	1,952
Returns [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	871	379
Provision related to sales in the current year	0	464
Adjustments related to prior period sales	(154)	0
Deductions applied and payments made	(156)	(259)
Ending balance	$ 561	$ 584