Property and Equipment - Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands |
Jun. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 61,204 | $ 59,183 |
| Less accumulated depreciation | (48,534) | (44,235) |
| Property and equipment, net | 12,670 | 14,948 |
| Computer equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 25,808 | 25,392 |
| Computer software | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 32,530 | 31,037 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 1,308 | 1,315 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 1,101 | 1,116 |
| Work in process (primarily software development costs) | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 196 | 187 |
| Other | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 261 | $ 136 |