Organization, Business and Summary of Significant Accounting Policies - Summary of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenues	$ 320,477	$ 289,545
Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	294,566	270,770
Nebula
Disaggregation Of Revenue [Line Items]
Revenues	25,911	18,775
Legal Technology
Disaggregation Of Revenue [Line Items]
Revenues	276,333	247,285
Legal Technology | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	250,422	228,510
Legal Technology | Nebula
Disaggregation Of Revenue [Line Items]
Revenues	25,911	18,775
Data Recovery
Disaggregation Of Revenue [Line Items]
Revenues	44,144	42,260
Data Recovery | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	$ 44,144	$ 42,260