Segment and Geographic Information - Summary of Revenue and Long-lived Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Revenues	$ 208,576	$ 210,318
Long-lived assets	107,858		$ 107,298
United States [Member]
Segment Reporting Information [Line Items]
Revenues	142,660	145,275
Long-lived assets	94,594		92,983
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenues	42,729	41,220
Long-lived assets	11,736		12,683
Other [Member]
Segment Reporting Information [Line Items]
Revenues	23,187	$ 23,823
Long-lived assets	$ 1,528		$ 1,632