Revenue - Product Revenue Allowance and Reserves (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	$ 3,353	$ 1,712
Provision related to sales in the current year	10,463	5,394
Adjustments related to prior period sales		(172)
Deductions applied and payments made	(9,386)	(3,931)
Ending balance	4,430	3,003
Chargebacks, Discounts and Fees [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	1,153	574
Provision related to sales in the current year	6,580	2,932
Adjustments related to prior period sales		(50)
Deductions applied and payments made	(5,698)	(2,229)
Ending balance	2,035	1,227
Government and Other Rebates [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	1,821	535
Provision related to sales in the current year	3,554	1,965
Adjustments related to prior period sales		(22)
Deductions applied and payments made	(3,490)	(1,121)
Ending balance	1,885	1,357
Returns [Member]
Disclosure Of Product Revenue Reserves And Allowances [Line Items]
Beginning balance	379	603
Provision related to sales in the current year	329	497
Adjustments related to prior period sales		(100)
Deductions applied and payments made	(198)	(581)
Ending balance	$ 510	$ 419