Organization, Business and Summary of Significant Accounting Policies - Summary of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 81,898	$ 75,450
Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	75,781	70,045
Nebula
Disaggregation Of Revenue [Line Items]
Revenues	6,117	5,405
Legal Technology
Disaggregation Of Revenue [Line Items]
Revenues	72,357	63,734
Legal Technology | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	66,240	58,329
Legal Technology | Nebula
Disaggregation Of Revenue [Line Items]
Revenues	6,117	5,405
Data Recovery
Disaggregation Of Revenue [Line Items]
Revenues	9,541	11,716
Data Recovery | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	$ 9,541	$ 11,716