Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 572,221	$ 532,179	$ 469,921
Adjusted EBITDA	108,600	85,253	57,288
Software [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	537,169	485,569	418,165
Adjusted EBITDA	107,638	82,845	53,820
CES [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	28,883	39,282	44,320
Adjusted EBITDA	2,576	4,723	5,129
All Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,169	7,328	7,436
Adjusted EBITDA	$ (1,614)	$ (2,315)	$ (1,661)