Fair Value Measurements - Financial Instruments that were not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 13, 2022	Oct. 03, 2022	Dec. 31, 2021	Dec. 16, 2021	Jun. 08, 2021
Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities						$ 15,000
Selected, Inc
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities					$ 1,500
Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities			$ 10,000
HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities		$ 8,000
Level 2 | Carrying Amount | Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	$ 7,500			$ 15,000
Level 2 | Carrying Amount | Selected, Inc
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	0			1,500
Level 2 | Carrying Amount | Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	10,000			0
Level 2 | Carrying Amount | HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	8,000			0
Level 2 | Fair Value | Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	7,500			15,000
Level 2 | Fair Value | Selected, Inc
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	0			1,500
Level 2 | Fair Value | Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	10,000			0
Level 2 | Fair Value | HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liabilities	8,000			0
Senior Secured Asset-Based Loan | Level 2 | Carrying Amount
Fair Value, Option, Quantitative Disclosures [Line Items]
Senior Secured Asset-Based Loan	76,800			9,200
Senior Secured Asset-Based Loan | Level 2 | Fair Value
Fair Value, Option, Quantitative Disclosures [Line Items]
Senior Secured Asset-Based Loan	76,800			9,200
Earnout Notes Payable | Level 2 | Carrying Amount
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument	0			2,426
Earnout Notes Payable | Level 2 | Fair Value
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument	0			2,426
Term Loan | Level 2 | Carrying Amount
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument	73,875			174,312
Term Loan | Level 2 | Fair Value
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument	$ 71,221			$ 174,845