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v3.20.2

Basis of Presentation of Interim Period Statements - Additional Information (Detail) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) Company | Jun. 30, 2020 USD ($) Company | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Abstract] |  |  |  |
Revenue recognition professional employer service contracts term |  | 1 year |  |
Professional employer service contract cancellation and termination period |  | 30 days |  |
Payment term for staffing customers |  | 30 days |  |
Number of wholly-owned insurance companies | Company | 2 | 2 |  |
Cash and cash equivalents, maturity term |  | 3 months |  |
Allowance for doubtful accounts | $ 821,000 | $ 821,000 |  | $ 888,000
Estimate of liability for unpaid safety incentives | 25,800,000 | $ 25,800,000 |  | $ 28,000,000.0
Income taxes paid | $ 0 |  | $ 0 |

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