Segment, Customer and Geographic Information - Significant Customer that Accounted for More than Ten Percentage of Total Product Revenue (Detail) - Customer Concentration Risk - Sales Revenue, Goods, Net	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
American Red Cross
Revenue, Major Customer [Line Items]
Concentration risk, percentage	35.00%	20.00%	28.00%	19.00%
Etablissement Francais du Sang
Revenue, Major Customer [Line Items]
Concentration risk, percentage	16.00%	24.00%	18.00%	23.00%