Revenue - Product Revenue Allowance and Reserves (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	$ 147	$ 760
Provision related to sales in the current year	0	0
Adjustments related to prior period sales	0	70
Deductions applied and payments made	(68)	(184)
Ending balance	79	646
Chargebacks, Discounts and Fees [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	5	83
Provision related to sales in the current year	0	0
Adjustments related to prior period sales	0	70
Deductions applied and payments made	(3)	(130)
Ending balance	2	23
Government and Other Rebates [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	0	0
Provision related to sales in the current year	0	0
Adjustments related to prior period sales	106	0
Deductions applied and payments made	(29)	0
Ending balance	77	0
Returns [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	142	677
Provision related to sales in the current year	0	0
Adjustments related to prior period sales	(106)	0
Deductions applied and payments made	(36)	(54)
Ending balance	$ 0	$ 623