Basis of Presentation of Interim Period Statements - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2022 USD ($) Company	Mar. 31, 2021 USD ($) shares	Dec. 31, 2021 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	$ 555,000		$ 460,000
Estimate of liability for unpaid safety incentives	3,300,000		$ 4,300,000
Income taxes paid	$ 40,000.00	$ 200,000
Potential common shares excluded from calculation of diluted loss per share | shares		95,889