Segment Information - Total Revenue to Unaffiliated Customers by Geographic Area, Based on Location of Customer (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 201,187	$ 211,008	$ 211,093
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	120,378	118,755	119,079
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	32,922	36,177	37,947
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	20,080	21,988	25,272
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	27,421	33,645	28,261
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 386	$ 443	$ 534