Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation of Interim Period Statements - Additional Information (Detail)

v3.21.1
Basis of Presentation of Interim Period Statements - Additional Information (Detail)
3 Months Ended
Mar. 31, 2021
USD ($)
Company
shares
Mar. 31, 2020
USD ($)
shares
Dec. 31, 2020
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    
Cash and cash equivalents, maturity term 3 months    
Allowance for doubtful accounts $ 1,092,000   $ 757,000
Estimate of liability for unpaid safety incentives 11,300,000   $ 18,800,000
Income taxes paid $ 200,000 $ 0  
Potential common shares excluded from calculation of diluted loss per share | shares 95,899 187,745