Organization, Business and Summary of Significant Accounting Policies - Summary of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 75,191	$ 81,650	$ 157,089	$ 157,100
Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	67,441	74,810	143,221	144,856
Nebula
Disaggregation Of Revenue [Line Items]
Revenues	7,750	6,839	13,868	12,244
Legal Technology
Disaggregation Of Revenue [Line Items]
Revenues	66,650	70,708	139,007	134,442
Legal Technology | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	58,900	63,869	125,139	122,198
Legal Technology | Nebula
Disaggregation Of Revenue [Line Items]
Revenues	7,750	6,839	13,868	12,244
Data Recovery
Disaggregation Of Revenue [Line Items]
Revenues	8,541	10,941	18,082	22,658
Data Recovery | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	$ 8,541	$ 10,941	$ 18,082	$ 22,658