Segment Information - Total Revenue to Unaffiliated Customers by Geographic Area, Based on Location of Customer (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 54,447	$ 51,472	$ 107,826	$ 106,289
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	30,019	29,398	59,480	59,784
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,128	9,547	19,233	18,470
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,077	5,370	12,338	13,078
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,060	7,016	16,496	14,675
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 163	$ 141	$ 279	$ 282