Segment, Customer and Geographic Information - Revenue by Geographical Location (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue, Major Customer [Line Items]
Revenue	$ 186,797	$ 188,315	$ 159,518
Product
Revenue, Major Customer [Line Items]
Revenue	156,367	162,048	130,859
Product | UNITED STATES
Revenue, Major Customer [Line Items]
Revenue	93,232	101,391	67,498
Product | FRANCE
Revenue, Major Customer [Line Items]
Revenue	18,490	19,327	20,887
Product | Other Countries
Revenue, Major Customer [Line Items]
Revenue	44,645	41,330	42,474
Government Contract
Revenue, Major Customer [Line Items]
Revenue	30,430	26,267	28,659
Government Contract | UNITED STATES
Revenue, Major Customer [Line Items]
Revenue	$ 30,430	$ 26,267	$ 28,659