Total Revenues Gross Profit and Long Lived Assets Excluding Long Term Deferred Tax Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets
Total revenues	$ 499,264	$ 510,762	$ 480,735
Gross profit	396,275	418,853	389,680
Long-lived assets	93,610	103,347
Domestic
Revenues from External Customers and Long-Lived Assets
Total revenues	298,522	286,131	279,220
Gross profit	241,596	238,347	229,466
Long-lived assets	83,365	89,817
EMEA
Revenues from External Customers and Long-Lived Assets
Total revenues	152,614	171,140	155,478
Gross profit	120,162	139,704	124,513
Long-lived assets	6,466	7,874
Other Regions
Revenues from External Customers and Long-Lived Assets
Total revenues	48,128	53,491	46,037
Gross profit	34,517	40,802	$ 35,701
Long-lived assets	$ 3,779	$ 5,656