Organization, Business and Summary of Significant Accounting Policies - Summary of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 74,544	$ 81,122	$ 231,633	$ 238,222
Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	68,066	74,060	211,287	218,916
Nebula
Disaggregation Of Revenue [Line Items]
Revenues	6,478	7,062	20,346	19,306
Legal Technology
Disaggregation Of Revenue [Line Items]
Revenues	66,444	70,323	205,451	204,760
Legal Technology | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	59,966	63,261	185,105	185,454
Legal Technology | Nebula
Disaggregation Of Revenue [Line Items]
Revenues	6,478	7,062	20,346	19,306
Data Recovery
Disaggregation Of Revenue [Line Items]
Revenues	8,100	10,799	26,182	33,462
Data Recovery | Technology Solutions
Disaggregation Of Revenue [Line Items]
Revenues	$ 8,100	$ 10,799	$ 26,182	$ 33,462