Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 159,781	$ 150,163
Adjusted EBITDA	46,590	36,960
Software [Member]
Segment Reporting Information [Line Items]
Revenue	149,958	137,639
Adjusted EBITDA	46,184	36,238
CES [Member]
Segment Reporting Information [Line Items]
Revenue	8,012	10,677
Adjusted EBITDA	798	1,010
All Other [Member]
Segment Reporting Information [Line Items]
Revenue	1,811	1,847
Adjusted EBITDA	$ (392)	$ (288)